19859320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{211}}^1$

素因数の和:416

約数の個数: 64

約数和(自身を含む): 48615840

約数和(自身を除く): 28756520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 181, 211, 260, 362, 422, 520, 724, 844, 905, 1055, 1448, 1688, 1810, 2110, 2353, 2743, 3620, 4220, 4706, 5486, 7240, 8440, 9412, 10972, 11765, 13715, 18824, 21944, 23530, 27430, 38191, 47060, 54860, 76382, 94120, 109720, 152764, 190955, 305528, 381910, 496483, 763820, 992966, 1527640, 1985932, 2482415, 3971864, 4964830, 9929660, 19859320]

約数ペア:

[(1, 19859320), (2, 9929660), (4, 4964830), (5, 3971864), (8, 2482415), (10, 1985932), (13, 1527640), (20, 992966), (26, 763820), (40, 496483), (52, 381910), (65, 305528), (104, 190955), (130, 152764), (181, 109720), (211, 94120), (260, 76382), (362, 54860), (422, 47060), (520, 38191), (724, 27430), (844, 23530), (905, 21944), (1055, 18824), (1448, 13715), (1688, 11765), (1810, 10972), (2110, 9412), (2353, 8440), (2743, 7240), (3620, 5486), (4220, 4706)]