40156780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1\times {\mathrm{271}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 87736320

約数和(自身を除く): 47579540

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 239, 271, 310, 478, 542, 620, 956, 1084, 1195, 1355, 2390, 2710, 4780, 5420, 7409, 8401, 14818, 16802, 29636, 33604, 37045, 42005, 64769, 74090, 84010, 129538, 148180, 168020, 259076, 323845, 647690, 1295380, 2007839, 4015678, 8031356, 10039195, 20078390, 40156780]

約数ペア:

[(1, 40156780), (2, 20078390), (4, 10039195), (5, 8031356), (10, 4015678), (20, 2007839), (31, 1295380), (62, 647690), (124, 323845), (155, 259076), (239, 168020), (271, 148180), (310, 129538), (478, 84010), (542, 74090), (620, 64769), (956, 42005), (1084, 37045), (1195, 33604), (1355, 29636), (2390, 16802), (2710, 14818), (4780, 8401), (5420, 7409)]