257451740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:256

約数の個数: 192

約数和(自身を含む): 722421504

約数和(自身を除く): 464969764

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 17, 20, 26, 28, 34, 35, 52, 53, 65, 68, 70, 85, 91, 106, 119, 130, 140, 157, 170, 182, 212, 221, 238, 260, 265, 314, 340, 364, 371, 442, 455, 476, 530, 595, 628, 689, 742, 785, 884, 901, 910, 1060, 1099, 1105, 1190, 1378, 1484, 1547, 1570, 1802, 1820, 1855, 2041, 2198, 2210, 2380, 2669, 2756, 3094, 3140, 3445, 3604, 3710, 4082, 4396, 4420, 4505, 4823, 5338, 5495, 6188, 6307, 6890, 7420, 7735, 8164, 8321, 9010, 9646, 10205, 10676, 10990, 11713, 12614, 13345, 13780, 14287, 15470, 16642, 18020, 18683, 19292, 20410, 21980, 23426, 24115, 25228, 26690, 28574, 30940, 31535, 33284, 34697, 37366, 40820, 41605, 46852, 48230, 53380, 57148, 58247, 58565, 63070, 69394, 71435, 74732, 81991, 83210, 93415, 96460, 108173, 116494, 117130, 126140, 138788, 141457, 142870, 163982, 166420, 173485, 186830, 216346, 232988, 234260, 242879, 282914, 285740, 291235, 327964, 346970, 373660, 409955, 432692, 485758, 540865, 565828, 582470, 693940, 707285, 757211, 819910, 971516, 990199, 1081730, 1164940, 1214395, 1414570, 1514422, 1639820, 1838941, 1980398, 2163460, 2428790, 2829140, 3028844, 3677882, 3786055, 3960796, 4857580, 4950995, 7355764, 7572110, 9194705, 9901990, 12872587, 15144220, 18389410, 19803980, 25745174, 36778820, 51490348, 64362935, 128725870, 257451740]

約数ペア:

[(1, 257451740), (2, 128725870), (4, 64362935), (5, 51490348), (7, 36778820), (10, 25745174), (13, 19803980), (14, 18389410), (17, 15144220), (20, 12872587), (26, 9901990), (28, 9194705), (34, 7572110), (35, 7355764), (52, 4950995), (53, 4857580), (65, 3960796), (68, 3786055), (70, 3677882), (85, 3028844), (91, 2829140), (106, 2428790), (119, 2163460), (130, 1980398), (140, 1838941), (157, 1639820), (170, 1514422), (182, 1414570), (212, 1214395), (221, 1164940), (238, 1081730), (260, 990199), (265, 971516), (314, 819910), (340, 757211), (364, 707285), (371, 693940), (442, 582470), (455, 565828), (476, 540865), (530, 485758), (595, 432692), (628, 409955), (689, 373660), (742, 346970), (785, 327964), (884, 291235), (901, 285740), (910, 282914), (1060, 242879), (1099, 234260), (1105, 232988), (1190, 216346), (1378, 186830), (1484, 173485), (1547, 166420), (1570, 163982), (1802, 142870), (1820, 141457), (1855, 138788), (2041, 126140), (2198, 117130), (2210, 116494), (2380, 108173), (2669, 96460), (2756, 93415), (3094, 83210), (3140, 81991), (3445, 74732), (3604, 71435), (3710, 69394), (4082, 63070), (4396, 58565), (4420, 58247), (4505, 57148), (4823, 53380), (5338, 48230), (5495, 46852), (6188, 41605), (6307, 40820), (6890, 37366), (7420, 34697), (7735, 33284), (8164, 31535), (8321, 30940), (9010, 28574), (9646, 26690), (10205, 25228), (10676, 24115), (10990, 23426), (11713, 21980), (12614, 20410), (13345, 19292), (13780, 18683), (14287, 18020), (15470, 16642)]