21161808

素因数分解:

$2^4\times 3^2\times {\mathrm{223}}^1\times {\mathrm{659}}^1$

素因数の和:896

約数の個数: 60

約数和(自身を含む): 59579520

約数和(自身を除く): 38417712

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 223, 446, 659, 669, 892, 1318, 1338, 1784, 1977, 2007, 2636, 2676, 3568, 3954, 4014, 5272, 5352, 5931, 7908, 8028, 10544, 10704, 11862, 15816, 16056, 23724, 31632, 32112, 47448, 94896, 146957, 293914, 440871, 587828, 881742, 1175656, 1322613, 1763484, 2351312, 2645226, 3526968, 5290452, 7053936, 10580904, 21161808]

約数ペア:

[(1, 21161808), (2, 10580904), (3, 7053936), (4, 5290452), (6, 3526968), (8, 2645226), (9, 2351312), (12, 1763484), (16, 1322613), (18, 1175656), (24, 881742), (36, 587828), (48, 440871), (72, 293914), (144, 146957), (223, 94896), (446, 47448), (659, 32112), (669, 31632), (892, 23724), (1318, 16056), (1338, 15816), (1784, 11862), (1977, 10704), (2007, 10544), (2636, 8028), (2676, 7908), (3568, 5931), (3954, 5352), (4014, 5272)]