20871184

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{1451}}^1$

素因数の和:1519

約数の個数: 40

約数和(自身を含む): 43211520

約数和(自身を除く): 22340336

約数列:

[1, 2, 4, 8, 16, 29, 31, 58, 62, 116, 124, 232, 248, 464, 496, 899, 1451, 1798, 2902, 3596, 5804, 7192, 11608, 14384, 23216, 42079, 44981, 84158, 89962, 168316, 179924, 336632, 359848, 673264, 719696, 1304449, 2608898, 5217796, 10435592, 20871184]

約数ペア:

[(1, 20871184), (2, 10435592), (4, 5217796), (8, 2608898), (16, 1304449), (29, 719696), (31, 673264), (58, 359848), (62, 336632), (116, 179924), (124, 168316), (232, 89962), (248, 84158), (464, 44981), (496, 42079), (899, 23216), (1451, 14384), (1798, 11608), (2902, 7192), (3596, 5804)]