16988500

素因数分解:

$2^2\times 5^3\times {\mathrm{61}}^1\times {\mathrm{557}}^1$

素因数の和:637

約数の個数: 48

約数和(自身を含む): 37778832

約数和(自身を除く): 20790332

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 61, 100, 122, 125, 244, 250, 305, 500, 557, 610, 1114, 1220, 1525, 2228, 2785, 3050, 5570, 6100, 7625, 11140, 13925, 15250, 27850, 30500, 33977, 55700, 67954, 69625, 135908, 139250, 169885, 278500, 339770, 679540, 849425, 1698850, 3397700, 4247125, 8494250, 16988500]

約数ペア:

[(1, 16988500), (2, 8494250), (4, 4247125), (5, 3397700), (10, 1698850), (20, 849425), (25, 679540), (50, 339770), (61, 278500), (100, 169885), (122, 139250), (125, 135908), (244, 69625), (250, 67954), (305, 55700), (500, 33977), (557, 30500), (610, 27850), (1114, 15250), (1220, 13925), (1525, 11140), (2228, 7625), (2785, 6100), (3050, 5570)]