42855020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{409}}^1$

素因数の和:475

約数の個数: 72

約数和(自身を含む): 100840320

約数和(自身を除く): 57985300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 169, 260, 310, 338, 403, 409, 620, 676, 806, 818, 845, 1612, 1636, 1690, 2015, 2045, 3380, 4030, 4090, 5239, 5317, 8060, 8180, 10478, 10634, 12679, 20956, 21268, 25358, 26195, 26585, 50716, 52390, 53170, 63395, 69121, 104780, 106340, 126790, 138242, 164827, 253580, 276484, 329654, 345605, 659308, 691210, 824135, 1382420, 1648270, 2142751, 3296540, 4285502, 8571004, 10713755, 21427510, 42855020]

約数ペア:

[(1, 42855020), (2, 21427510), (4, 10713755), (5, 8571004), (10, 4285502), (13, 3296540), (20, 2142751), (26, 1648270), (31, 1382420), (52, 824135), (62, 691210), (65, 659308), (124, 345605), (130, 329654), (155, 276484), (169, 253580), (260, 164827), (310, 138242), (338, 126790), (403, 106340), (409, 104780), (620, 69121), (676, 63395), (806, 53170), (818, 52390), (845, 50716), (1612, 26585), (1636, 26195), (1690, 25358), (2015, 21268), (2045, 20956), (3380, 12679), (4030, 10634), (4090, 10478), (5239, 8180), (5317, 8060)]