20870220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:152

約数の個数: 192

約数和(自身を含む): 73543680

約数和(自身を除く): 52673460

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 20, 21, 28, 30, 34, 35, 37, 42, 51, 60, 68, 70, 74, 79, 84, 85, 102, 105, 111, 119, 140, 148, 158, 170, 185, 204, 210, 222, 237, 238, 255, 259, 316, 340, 357, 370, 395, 420, 444, 474, 476, 510, 518, 553, 555, 595, 629, 714, 740, 777, 790, 948, 1020, 1036, 1106, 1110, 1185, 1190, 1258, 1295, 1343, 1428, 1554, 1580, 1659, 1785, 1887, 2212, 2220, 2370, 2380, 2516, 2590, 2686, 2765, 2923, 3108, 3145, 3318, 3570, 3774, 3885, 4029, 4403, 4740, 5180, 5372, 5530, 5846, 6290, 6636, 6715, 7140, 7548, 7770, 8058, 8295, 8769, 8806, 9401, 9435, 11060, 11692, 12580, 13209, 13430, 14615, 15540, 16116, 16590, 17538, 17612, 18802, 18870, 20145, 20461, 22015, 26418, 26860, 28203, 29230, 33180, 35076, 37604, 37740, 40290, 40922, 43845, 44030, 47005, 49691, 52836, 56406, 58460, 61383, 66045, 80580, 81844, 87690, 88060, 94010, 99382, 102305, 112812, 122766, 132090, 141015, 149073, 175380, 188020, 198764, 204610, 245532, 248455, 264180, 282030, 298146, 306915, 347837, 409220, 496910, 564060, 596292, 613830, 695674, 745365, 993820, 1043511, 1227660, 1391348, 1490730, 1739185, 2087022, 2981460, 3478370, 4174044, 5217555, 6956740, 10435110, 20870220]

約数ペア:

[(1, 20870220), (2, 10435110), (3, 6956740), (4, 5217555), (5, 4174044), (6, 3478370), (7, 2981460), (10, 2087022), (12, 1739185), (14, 1490730), (15, 1391348), (17, 1227660), (20, 1043511), (21, 993820), (28, 745365), (30, 695674), (34, 613830), (35, 596292), (37, 564060), (42, 496910), (51, 409220), (60, 347837), (68, 306915), (70, 298146), (74, 282030), (79, 264180), (84, 248455), (85, 245532), (102, 204610), (105, 198764), (111, 188020), (119, 175380), (140, 149073), (148, 141015), (158, 132090), (170, 122766), (185, 112812), (204, 102305), (210, 99382), (222, 94010), (237, 88060), (238, 87690), (255, 81844), (259, 80580), (316, 66045), (340, 61383), (357, 58460), (370, 56406), (395, 52836), (420, 49691), (444, 47005), (474, 44030), (476, 43845), (510, 40922), (518, 40290), (553, 37740), (555, 37604), (595, 35076), (629, 33180), (714, 29230), (740, 28203), (777, 26860), (790, 26418), (948, 22015), (1020, 20461), (1036, 20145), (1106, 18870), (1110, 18802), (1185, 17612), (1190, 17538), (1258, 16590), (1295, 16116), (1343, 15540), (1428, 14615), (1554, 13430), (1580, 13209), (1659, 12580), (1785, 11692), (1887, 11060), (2212, 9435), (2220, 9401), (2370, 8806), (2380, 8769), (2516, 8295), (2590, 8058), (2686, 7770), (2765, 7548), (2923, 7140), (3108, 6715), (3145, 6636), (3318, 6290), (3570, 5846), (3774, 5530), (3885, 5372), (4029, 5180), (4403, 4740)]