31987120

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{223}}^1$

素因数の和:410

約数の個数: 80

約数和(自身を含む): 81994752

約数和(自身を除く): 50007632

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 163, 176, 220, 223, 326, 440, 446, 652, 815, 880, 892, 1115, 1304, 1630, 1784, 1793, 2230, 2453, 2608, 3260, 3568, 3586, 4460, 4906, 6520, 7172, 8920, 8965, 9812, 12265, 13040, 14344, 17840, 17930, 19624, 24530, 28688, 35860, 36349, 39248, 49060, 71720, 72698, 98120, 143440, 145396, 181745, 196240, 290792, 363490, 399839, 581584, 726980, 799678, 1453960, 1599356, 1999195, 2907920, 3198712, 3998390, 6397424, 7996780, 15993560, 31987120]

約数ペア:

[(1, 31987120), (2, 15993560), (4, 7996780), (5, 6397424), (8, 3998390), (10, 3198712), (11, 2907920), (16, 1999195), (20, 1599356), (22, 1453960), (40, 799678), (44, 726980), (55, 581584), (80, 399839), (88, 363490), (110, 290792), (163, 196240), (176, 181745), (220, 145396), (223, 143440), (326, 98120), (440, 72698), (446, 71720), (652, 49060), (815, 39248), (880, 36349), (892, 35860), (1115, 28688), (1304, 24530), (1630, 19624), (1784, 17930), (1793, 17840), (2230, 14344), (2453, 13040), (2608, 12265), (3260, 9812), (3568, 8965), (3586, 8920), (4460, 7172), (4906, 6520)]