21070140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{227}}^1$

素因数の和:276

約数の個数: 192

約数和(自身を含む): 77220864

約数和(自身を除く): 56150724

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 17, 20, 21, 26, 28, 30, 34, 35, 39, 42, 51, 52, 60, 65, 68, 70, 78, 84, 85, 91, 102, 105, 119, 130, 140, 156, 170, 182, 195, 204, 210, 221, 227, 238, 255, 260, 273, 340, 357, 364, 390, 420, 442, 454, 455, 476, 510, 546, 595, 663, 681, 714, 780, 884, 908, 910, 1020, 1092, 1105, 1135, 1190, 1326, 1362, 1365, 1428, 1547, 1589, 1785, 1820, 2210, 2270, 2380, 2652, 2724, 2730, 2951, 3094, 3178, 3315, 3405, 3570, 3859, 4420, 4540, 4641, 4767, 5460, 5902, 6188, 6356, 6630, 6810, 7140, 7718, 7735, 7945, 8853, 9282, 9534, 11577, 11804, 13260, 13620, 14755, 15436, 15470, 15890, 17706, 18564, 19068, 19295, 20657, 23154, 23205, 23835, 27013, 29510, 30940, 31780, 35412, 38590, 41314, 44265, 46308, 46410, 47670, 50167, 54026, 57885, 59020, 61971, 77180, 81039, 82628, 88530, 92820, 95340, 100334, 103285, 108052, 115770, 123942, 135065, 150501, 162078, 177060, 200668, 206570, 231540, 247884, 250835, 270130, 301002, 309855, 324156, 351169, 405195, 413140, 501670, 540260, 602004, 619710, 702338, 752505, 810390, 1003340, 1053507, 1239420, 1404676, 1505010, 1620780, 1755845, 2107014, 3010020, 3511690, 4214028, 5267535, 7023380, 10535070, 21070140]

約数ペア:

[(1, 21070140), (2, 10535070), (3, 7023380), (4, 5267535), (5, 4214028), (6, 3511690), (7, 3010020), (10, 2107014), (12, 1755845), (13, 1620780), (14, 1505010), (15, 1404676), (17, 1239420), (20, 1053507), (21, 1003340), (26, 810390), (28, 752505), (30, 702338), (34, 619710), (35, 602004), (39, 540260), (42, 501670), (51, 413140), (52, 405195), (60, 351169), (65, 324156), (68, 309855), (70, 301002), (78, 270130), (84, 250835), (85, 247884), (91, 231540), (102, 206570), (105, 200668), (119, 177060), (130, 162078), (140, 150501), (156, 135065), (170, 123942), (182, 115770), (195, 108052), (204, 103285), (210, 100334), (221, 95340), (227, 92820), (238, 88530), (255, 82628), (260, 81039), (273, 77180), (340, 61971), (357, 59020), (364, 57885), (390, 54026), (420, 50167), (442, 47670), (454, 46410), (455, 46308), (476, 44265), (510, 41314), (546, 38590), (595, 35412), (663, 31780), (681, 30940), (714, 29510), (780, 27013), (884, 23835), (908, 23205), (910, 23154), (1020, 20657), (1092, 19295), (1105, 19068), (1135, 18564), (1190, 17706), (1326, 15890), (1362, 15470), (1365, 15436), (1428, 14755), (1547, 13620), (1589, 13260), (1785, 11804), (1820, 11577), (2210, 9534), (2270, 9282), (2380, 8853), (2652, 7945), (2724, 7735), (2730, 7718), (2951, 7140), (3094, 6810), (3178, 6630), (3315, 6356), (3405, 6188), (3570, 5902), (3859, 5460), (4420, 4767), (4540, 4641)]