1891000

素因数分解:

$2^3\times 5^3\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:113

約数の個数: 64

約数和(自身を含む): 4642560

約数和(自身を除く): 2751560

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 61, 62, 100, 122, 124, 125, 155, 200, 244, 248, 250, 305, 310, 488, 500, 610, 620, 775, 1000, 1220, 1240, 1525, 1550, 1891, 2440, 3050, 3100, 3782, 3875, 6100, 6200, 7564, 7625, 7750, 9455, 12200, 15128, 15250, 15500, 18910, 30500, 31000, 37820, 47275, 61000, 75640, 94550, 189100, 236375, 378200, 472750, 945500, 1891000]

約数ペア:

[(1, 1891000), (2, 945500), (4, 472750), (5, 378200), (8, 236375), (10, 189100), (20, 94550), (25, 75640), (31, 61000), (40, 47275), (50, 37820), (61, 31000), (62, 30500), (100, 18910), (122, 15500), (124, 15250), (125, 15128), (155, 12200), (200, 9455), (244, 7750), (248, 7625), (250, 7564), (305, 6200), (310, 6100), (488, 3875), (500, 3782), (610, 3100), (620, 3050), (775, 2440), (1000, 1891), (1220, 1550), (1240, 1525)]