19138750

素因数分解:

$2^1\times 5^4\times {\mathrm{61}}^1\times {\mathrm{251}}^1$

素因数の和:334

約数の個数: 40

約数和(自身を含む): 36607032

約数和(自身を除く): 17468282

約数列:

[1, 2, 5, 10, 25, 50, 61, 122, 125, 250, 251, 305, 502, 610, 625, 1250, 1255, 1525, 2510, 3050, 6275, 7625, 12550, 15250, 15311, 30622, 31375, 38125, 62750, 76250, 76555, 153110, 156875, 313750, 382775, 765550, 1913875, 3827750, 9569375, 19138750]

約数ペア:

[(1, 19138750), (2, 9569375), (5, 3827750), (10, 1913875), (25, 765550), (50, 382775), (61, 313750), (122, 156875), (125, 153110), (250, 76555), (251, 76250), (305, 62750), (502, 38125), (610, 31375), (625, 30622), (1250, 15311), (1255, 15250), (1525, 12550), (2510, 7625), (3050, 6275)]