20123290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{2999}}^1$

素因数の和:3078

約数の個数: 32

約数和(自身を含む): 40176000

約数和(自身を除く): 20052710

約数列:

[1, 2, 5, 10, 11, 22, 55, 61, 110, 122, 305, 610, 671, 1342, 2999, 3355, 5998, 6710, 14995, 29990, 32989, 65978, 164945, 182939, 329890, 365878, 914695, 1829390, 2012329, 4024658, 10061645, 20123290]

約数ペア:

[(1, 20123290), (2, 10061645), (5, 4024658), (10, 2012329), (11, 1829390), (22, 914695), (55, 365878), (61, 329890), (110, 182939), (122, 164945), (305, 65978), (610, 32989), (671, 29990), (1342, 14995), (2999, 6710), (3355, 5998)]