210162020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{419}}^1\times {\mathrm{809}}^1$

素因数の和:1268

約数の個数: 48

約数和(自身を含む): 457228800

約数和(自身を除く): 247066780

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 419, 620, 809, 838, 1618, 1676, 2095, 3236, 4045, 4190, 8090, 8380, 12989, 16180, 25079, 25978, 50158, 51956, 64945, 100316, 125395, 129890, 250790, 259780, 338971, 501580, 677942, 1355884, 1694855, 3389710, 6779420, 10508101, 21016202, 42032404, 52540505, 105081010, 210162020]

約数ペア:

[(1, 210162020), (2, 105081010), (4, 52540505), (5, 42032404), (10, 21016202), (20, 10508101), (31, 6779420), (62, 3389710), (124, 1694855), (155, 1355884), (310, 677942), (419, 501580), (620, 338971), (809, 259780), (838, 250790), (1618, 129890), (1676, 125395), (2095, 100316), (3236, 64945), (4045, 51956), (4190, 50158), (8090, 25978), (8380, 25079), (12989, 16180)]