8705980

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 19020960

約数和(自身を除く): 10314980

約数列:

[1, 2, 4, 5, 10, 20, 67, 73, 89, 134, 146, 178, 268, 292, 335, 356, 365, 445, 670, 730, 890, 1340, 1460, 1780, 4891, 5963, 6497, 9782, 11926, 12994, 19564, 23852, 24455, 25988, 29815, 32485, 48910, 59630, 64970, 97820, 119260, 129940, 435299, 870598, 1741196, 2176495, 4352990, 8705980]

約数ペア:

[(1, 8705980), (2, 4352990), (4, 2176495), (5, 1741196), (10, 870598), (20, 435299), (67, 129940), (73, 119260), (89, 97820), (134, 64970), (146, 59630), (178, 48910), (268, 32485), (292, 29815), (335, 25988), (356, 24455), (365, 23852), (445, 19564), (670, 12994), (730, 11926), (890, 9782), (1340, 6497), (1460, 5963), (1780, 4891)]