19810920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8689}}^1$

素因数の和:8722

約数の個数: 64

約数和(自身を含む): 62568000

約数和(自身を除く): 42757080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 76, 95, 114, 120, 152, 190, 228, 285, 380, 456, 570, 760, 1140, 2280, 8689, 17378, 26067, 34756, 43445, 52134, 69512, 86890, 104268, 130335, 165091, 173780, 208536, 260670, 330182, 347560, 495273, 521340, 660364, 825455, 990546, 1042680, 1320728, 1650910, 1981092, 2476365, 3301820, 3962184, 4952730, 6603640, 9905460, 19810920]

約数ペア:

[(1, 19810920), (2, 9905460), (3, 6603640), (4, 4952730), (5, 3962184), (6, 3301820), (8, 2476365), (10, 1981092), (12, 1650910), (15, 1320728), (19, 1042680), (20, 990546), (24, 825455), (30, 660364), (38, 521340), (40, 495273), (57, 347560), (60, 330182), (76, 260670), (95, 208536), (114, 173780), (120, 165091), (152, 130335), (190, 104268), (228, 86890), (285, 69512), (380, 52134), (456, 43445), (570, 34756), (760, 26067), (1140, 17378), (2280, 8689)]