17789980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1291}}^1$

素因数の和:1366

約数の個数: 48

約数和(自身を含む): 41023584

約数和(自身を除く): 23233604

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 130, 212, 260, 265, 530, 689, 1060, 1291, 1378, 2582, 2756, 3445, 5164, 6455, 6890, 12910, 13780, 16783, 25820, 33566, 67132, 68423, 83915, 136846, 167830, 273692, 335660, 342115, 684230, 889499, 1368460, 1778998, 3557996, 4447495, 8894990, 17789980]

約数ペア:

[(1, 17789980), (2, 8894990), (4, 4447495), (5, 3557996), (10, 1778998), (13, 1368460), (20, 889499), (26, 684230), (52, 342115), (53, 335660), (65, 273692), (106, 167830), (130, 136846), (212, 83915), (260, 68423), (265, 67132), (530, 33566), (689, 25820), (1060, 16783), (1291, 13780), (1378, 12910), (2582, 6890), (2756, 6455), (3445, 5164)]