30931880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1811}}^1$

素因数の和:1890

約数の個数: 64

約数和(自身を含む): 80887680

約数和(自身を除く): 49955800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 61, 70, 122, 140, 244, 280, 305, 427, 488, 610, 854, 1220, 1708, 1811, 2135, 2440, 3416, 3622, 4270, 7244, 8540, 9055, 12677, 14488, 17080, 18110, 25354, 36220, 50708, 63385, 72440, 101416, 110471, 126770, 220942, 253540, 441884, 507080, 552355, 773297, 883768, 1104710, 1546594, 2209420, 3093188, 3866485, 4418840, 6186376, 7732970, 15465940, 30931880]

約数ペア:

[(1, 30931880), (2, 15465940), (4, 7732970), (5, 6186376), (7, 4418840), (8, 3866485), (10, 3093188), (14, 2209420), (20, 1546594), (28, 1104710), (35, 883768), (40, 773297), (56, 552355), (61, 507080), (70, 441884), (122, 253540), (140, 220942), (244, 126770), (280, 110471), (305, 101416), (427, 72440), (488, 63385), (610, 50708), (854, 36220), (1220, 25354), (1708, 18110), (1811, 17080), (2135, 14488), (2440, 12677), (3416, 9055), (3622, 8540), (4270, 7244)]