87857980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{2423}}^1$

素因数の和:2483

約数の個数: 72

約数和(自身を含む): 220516128

約数和(自身を除く): 132658148

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 49, 70, 74, 98, 140, 148, 185, 196, 245, 259, 370, 490, 518, 740, 980, 1036, 1295, 1813, 2423, 2590, 3626, 4846, 5180, 7252, 9065, 9692, 12115, 16961, 18130, 24230, 33922, 36260, 48460, 67844, 84805, 89651, 118727, 169610, 179302, 237454, 339220, 358604, 448255, 474908, 593635, 627557, 896510, 1187270, 1255114, 1793020, 2374540, 2510228, 3137785, 4392899, 6275570, 8785798, 12551140, 17571596, 21964495, 43928990, 87857980]

約数ペア:

[(1, 87857980), (2, 43928990), (4, 21964495), (5, 17571596), (7, 12551140), (10, 8785798), (14, 6275570), (20, 4392899), (28, 3137785), (35, 2510228), (37, 2374540), (49, 1793020), (70, 1255114), (74, 1187270), (98, 896510), (140, 627557), (148, 593635), (185, 474908), (196, 448255), (245, 358604), (259, 339220), (370, 237454), (490, 179302), (518, 169610), (740, 118727), (980, 89651), (1036, 84805), (1295, 67844), (1813, 48460), (2423, 36260), (2590, 33922), (3626, 24230), (4846, 18130), (5180, 16961), (7252, 12115), (9065, 9692)]