21039390

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7541}}^1$

素因数の和:7585

約数の個数: 48

約数和(自身を含む): 56474496

約数和(自身を除く): 35435106

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 31, 45, 62, 90, 93, 155, 186, 279, 310, 465, 558, 930, 1395, 2790, 7541, 15082, 22623, 37705, 45246, 67869, 75410, 113115, 135738, 226230, 233771, 339345, 467542, 678690, 701313, 1168855, 1402626, 2103939, 2337710, 3506565, 4207878, 7013130, 10519695, 21039390]

約数ペア:

[(1, 21039390), (2, 10519695), (3, 7013130), (5, 4207878), (6, 3506565), (9, 2337710), (10, 2103939), (15, 1402626), (18, 1168855), (30, 701313), (31, 678690), (45, 467542), (62, 339345), (90, 233771), (93, 226230), (155, 135738), (186, 113115), (279, 75410), (310, 67869), (465, 45246), (558, 37705), (930, 22623), (1395, 15082), (2790, 7541)]