21201960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13591}}^1$

素因数の和:13618

約数の個数: 64

約数和(自身を含む): 68503680

約数和(自身を除く): 47301720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13591, 27182, 40773, 54364, 67955, 81546, 108728, 135910, 163092, 176683, 203865, 271820, 326184, 353366, 407730, 530049, 543640, 706732, 815460, 883415, 1060098, 1413464, 1630920, 1766830, 2120196, 2650245, 3533660, 4240392, 5300490, 7067320, 10600980, 21201960]

約数ペア:

[(1, 21201960), (2, 10600980), (3, 7067320), (4, 5300490), (5, 4240392), (6, 3533660), (8, 2650245), (10, 2120196), (12, 1766830), (13, 1630920), (15, 1413464), (20, 1060098), (24, 883415), (26, 815460), (30, 706732), (39, 543640), (40, 530049), (52, 407730), (60, 353366), (65, 326184), (78, 271820), (104, 203865), (120, 176683), (130, 163092), (156, 135910), (195, 108728), (260, 81546), (312, 67955), (390, 54364), (520, 40773), (780, 27182), (1560, 13591)]