20108620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^2\times {\mathrm{71}}^1$

素因数の和:128

約数の個数: 108

約数和(自身を含む): 52916976

約数和(自身を除く): 32808356

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 49, 68, 70, 71, 85, 98, 119, 140, 142, 170, 196, 238, 245, 284, 289, 340, 355, 476, 490, 497, 578, 595, 710, 833, 980, 994, 1156, 1190, 1207, 1420, 1445, 1666, 1988, 2023, 2380, 2414, 2485, 2890, 3332, 3479, 4046, 4165, 4828, 4970, 5780, 6035, 6958, 8092, 8330, 8449, 9940, 10115, 12070, 13916, 14161, 16660, 16898, 17395, 20230, 20519, 24140, 28322, 33796, 34790, 40460, 41038, 42245, 56644, 59143, 69580, 70805, 82076, 84490, 102595, 118286, 141610, 143633, 168980, 205190, 236572, 283220, 287266, 295715, 410380, 574532, 591430, 718165, 1005431, 1182860, 1436330, 2010862, 2872660, 4021724, 5027155, 10054310, 20108620]

約数ペア:

[(1, 20108620), (2, 10054310), (4, 5027155), (5, 4021724), (7, 2872660), (10, 2010862), (14, 1436330), (17, 1182860), (20, 1005431), (28, 718165), (34, 591430), (35, 574532), (49, 410380), (68, 295715), (70, 287266), (71, 283220), (85, 236572), (98, 205190), (119, 168980), (140, 143633), (142, 141610), (170, 118286), (196, 102595), (238, 84490), (245, 82076), (284, 70805), (289, 69580), (340, 59143), (355, 56644), (476, 42245), (490, 41038), (497, 40460), (578, 34790), (595, 33796), (710, 28322), (833, 24140), (980, 20519), (994, 20230), (1156, 17395), (1190, 16898), (1207, 16660), (1420, 14161), (1445, 13916), (1666, 12070), (1988, 10115), (2023, 9940), (2380, 8449), (2414, 8330), (2485, 8092), (2890, 6958), (3332, 6035), (3479, 5780), (4046, 4970), (4165, 4828)]