257775420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{457}}^1$

素因数の和:572

約数の個数: 192

約数和(自身を含む): 886394880

約数和(自身を除く): 628619460

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 20, 21, 28, 30, 34, 35, 42, 51, 60, 68, 70, 79, 84, 85, 102, 105, 119, 140, 158, 170, 204, 210, 237, 238, 255, 316, 340, 357, 395, 420, 457, 474, 476, 510, 553, 595, 714, 790, 914, 948, 1020, 1106, 1185, 1190, 1343, 1371, 1428, 1580, 1659, 1785, 1828, 2212, 2285, 2370, 2380, 2686, 2742, 2765, 3199, 3318, 3570, 4029, 4570, 4740, 5372, 5484, 5530, 6398, 6636, 6715, 6855, 7140, 7769, 8058, 8295, 9140, 9401, 9597, 11060, 12796, 13430, 13710, 15538, 15995, 16116, 16590, 18802, 19194, 20145, 23307, 26860, 27420, 28203, 31076, 31990, 33180, 36103, 37604, 38388, 38845, 40290, 46614, 47005, 47985, 54383, 56406, 63980, 72206, 77690, 80580, 93228, 94010, 95970, 108309, 108766, 112812, 116535, 141015, 144412, 155380, 163149, 180515, 188020, 191940, 216618, 217532, 233070, 252721, 271915, 282030, 326298, 361030, 433236, 466140, 505442, 541545, 543830, 564060, 613751, 652596, 722060, 758163, 815745, 1010884, 1083090, 1087660, 1227502, 1263605, 1516326, 1631490, 1841253, 2166180, 2455004, 2527210, 3032652, 3068755, 3262980, 3682506, 3790815, 4296257, 5054420, 6137510, 7365012, 7581630, 8592514, 9206265, 12275020, 12888771, 15163260, 17185028, 18412530, 21481285, 25777542, 36825060, 42962570, 51555084, 64443855, 85925140, 128887710, 257775420]

約数ペア:

[(1, 257775420), (2, 128887710), (3, 85925140), (4, 64443855), (5, 51555084), (6, 42962570), (7, 36825060), (10, 25777542), (12, 21481285), (14, 18412530), (15, 17185028), (17, 15163260), (20, 12888771), (21, 12275020), (28, 9206265), (30, 8592514), (34, 7581630), (35, 7365012), (42, 6137510), (51, 5054420), (60, 4296257), (68, 3790815), (70, 3682506), (79, 3262980), (84, 3068755), (85, 3032652), (102, 2527210), (105, 2455004), (119, 2166180), (140, 1841253), (158, 1631490), (170, 1516326), (204, 1263605), (210, 1227502), (237, 1087660), (238, 1083090), (255, 1010884), (316, 815745), (340, 758163), (357, 722060), (395, 652596), (420, 613751), (457, 564060), (474, 543830), (476, 541545), (510, 505442), (553, 466140), (595, 433236), (714, 361030), (790, 326298), (914, 282030), (948, 271915), (1020, 252721), (1106, 233070), (1185, 217532), (1190, 216618), (1343, 191940), (1371, 188020), (1428, 180515), (1580, 163149), (1659, 155380), (1785, 144412), (1828, 141015), (2212, 116535), (2285, 112812), (2370, 108766), (2380, 108309), (2686, 95970), (2742, 94010), (2765, 93228), (3199, 80580), (3318, 77690), (3570, 72206), (4029, 63980), (4570, 56406), (4740, 54383), (5372, 47985), (5484, 47005), (5530, 46614), (6398, 40290), (6636, 38845), (6715, 38388), (6855, 37604), (7140, 36103), (7769, 33180), (8058, 31990), (8295, 31076), (9140, 28203), (9401, 27420), (9597, 26860), (11060, 23307), (12796, 20145), (13430, 19194), (13710, 18802), (15538, 16590), (15995, 16116)]