25042420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:305

約数の個数: 72

約数和(自身を含む): 59028480

約数和(自身を除く): 33986060

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 169, 239, 260, 310, 338, 403, 478, 620, 676, 806, 845, 956, 1195, 1612, 1690, 2015, 2390, 3107, 3380, 4030, 4780, 5239, 6214, 7409, 8060, 10478, 12428, 14818, 15535, 20956, 26195, 29636, 31070, 37045, 40391, 52390, 62140, 74090, 80782, 96317, 104780, 148180, 161564, 192634, 201955, 385268, 403910, 481585, 807820, 963170, 1252121, 1926340, 2504242, 5008484, 6260605, 12521210, 25042420]

約数ペア:

[(1, 25042420), (2, 12521210), (4, 6260605), (5, 5008484), (10, 2504242), (13, 1926340), (20, 1252121), (26, 963170), (31, 807820), (52, 481585), (62, 403910), (65, 385268), (124, 201955), (130, 192634), (155, 161564), (169, 148180), (239, 104780), (260, 96317), (310, 80782), (338, 74090), (403, 62140), (478, 52390), (620, 40391), (676, 37045), (806, 31070), (845, 29636), (956, 26195), (1195, 20956), (1612, 15535), (1690, 14818), (2015, 12428), (2390, 10478), (3107, 8060), (3380, 7409), (4030, 6214), (4780, 5239)]