31445000

素因数分解:

$2^3\times 5^4\times {\mathrm{19}}^1\times {\mathrm{331}}^1$

素因数の和:376

約数の個数: 80

約数和(自身を含む): 77787600

約数和(自身を除く): 46342600

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 125, 152, 190, 200, 250, 331, 380, 475, 500, 625, 662, 760, 950, 1000, 1250, 1324, 1655, 1900, 2375, 2500, 2648, 3310, 3800, 4750, 5000, 6289, 6620, 8275, 9500, 11875, 12578, 13240, 16550, 19000, 23750, 25156, 31445, 33100, 41375, 47500, 50312, 62890, 66200, 82750, 95000, 125780, 157225, 165500, 206875, 251560, 314450, 331000, 413750, 628900, 786125, 827500, 1257800, 1572250, 1655000, 3144500, 3930625, 6289000, 7861250, 15722500, 31445000]

約数ペア:

[(1, 31445000), (2, 15722500), (4, 7861250), (5, 6289000), (8, 3930625), (10, 3144500), (19, 1655000), (20, 1572250), (25, 1257800), (38, 827500), (40, 786125), (50, 628900), (76, 413750), (95, 331000), (100, 314450), (125, 251560), (152, 206875), (190, 165500), (200, 157225), (250, 125780), (331, 95000), (380, 82750), (475, 66200), (500, 62890), (625, 50312), (662, 47500), (760, 41375), (950, 33100), (1000, 31445), (1250, 25156), (1324, 23750), (1655, 19000), (1900, 16550), (2375, 13240), (2500, 12578), (2648, 11875), (3310, 9500), (3800, 8275), (4750, 6620), (5000, 6289)]