90991820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:243

約数の個数: 96

約数和(自身を含む): 213373440

約数和(自身を除く): 122381620

約数列:

[1, 2, 4, 5, 10, 17, 20, 31, 34, 62, 68, 85, 89, 97, 124, 155, 170, 178, 194, 310, 340, 356, 388, 445, 485, 527, 620, 890, 970, 1054, 1513, 1649, 1780, 1940, 2108, 2635, 2759, 3007, 3026, 3298, 5270, 5518, 6014, 6052, 6596, 7565, 8245, 8633, 10540, 11036, 12028, 13795, 15035, 15130, 16490, 17266, 27590, 30070, 30260, 32980, 34532, 43165, 46903, 51119, 55180, 60140, 86330, 93806, 102238, 146761, 172660, 187612, 204476, 234515, 255595, 267623, 293522, 469030, 511190, 535246, 587044, 733805, 938060, 1022380, 1070492, 1338115, 1467610, 2676230, 2935220, 4549591, 5352460, 9099182, 18198364, 22747955, 45495910, 90991820]

約数ペア:

[(1, 90991820), (2, 45495910), (4, 22747955), (5, 18198364), (10, 9099182), (17, 5352460), (20, 4549591), (31, 2935220), (34, 2676230), (62, 1467610), (68, 1338115), (85, 1070492), (89, 1022380), (97, 938060), (124, 733805), (155, 587044), (170, 535246), (178, 511190), (194, 469030), (310, 293522), (340, 267623), (356, 255595), (388, 234515), (445, 204476), (485, 187612), (527, 172660), (620, 146761), (890, 102238), (970, 93806), (1054, 86330), (1513, 60140), (1649, 55180), (1780, 51119), (1940, 46903), (2108, 43165), (2635, 34532), (2759, 32980), (3007, 30260), (3026, 30070), (3298, 27590), (5270, 17266), (5518, 16490), (6014, 15130), (6052, 15035), (6596, 13795), (7565, 12028), (8245, 11036), (8633, 10540)]