31990300

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{149}}^1$

素因数の和:295

約数の個数: 72

約数和(自身を含む): 74214000

約数和(自身を除く): 42223700

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 113, 149, 190, 226, 298, 380, 452, 475, 565, 596, 745, 950, 1130, 1490, 1900, 2147, 2260, 2825, 2831, 2980, 3725, 4294, 5650, 5662, 7450, 8588, 10735, 11300, 11324, 14155, 14900, 16837, 21470, 28310, 33674, 42940, 53675, 56620, 67348, 70775, 84185, 107350, 141550, 168370, 214700, 283100, 319903, 336740, 420925, 639806, 841850, 1279612, 1599515, 1683700, 3199030, 6398060, 7997575, 15995150, 31990300]

約数ペア:

[(1, 31990300), (2, 15995150), (4, 7997575), (5, 6398060), (10, 3199030), (19, 1683700), (20, 1599515), (25, 1279612), (38, 841850), (50, 639806), (76, 420925), (95, 336740), (100, 319903), (113, 283100), (149, 214700), (190, 168370), (226, 141550), (298, 107350), (380, 84185), (452, 70775), (475, 67348), (565, 56620), (596, 53675), (745, 42940), (950, 33674), (1130, 28310), (1490, 21470), (1900, 16837), (2147, 14900), (2260, 14155), (2825, 11324), (2831, 11300), (2980, 10735), (3725, 8588), (4294, 7450), (5650, 5662)]