20556940

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^2\times {\mathrm{29}}^1\times {\mathrm{67}}^1$

素因数の和:151

約数の個数: 72

約数和(自身を含む): 47381040

約数和(自身を除く): 26824100

約数列:

[1, 2, 4, 5, 10, 20, 23, 29, 46, 58, 67, 92, 115, 116, 134, 145, 230, 268, 290, 335, 460, 529, 580, 667, 670, 1058, 1334, 1340, 1541, 1943, 2116, 2645, 2668, 3082, 3335, 3886, 5290, 6164, 6670, 7705, 7772, 9715, 10580, 13340, 15341, 15410, 19430, 30682, 30820, 35443, 38860, 44689, 61364, 70886, 76705, 89378, 141772, 153410, 177215, 178756, 223445, 306820, 354430, 446890, 708860, 893780, 1027847, 2055694, 4111388, 5139235, 10278470, 20556940]

約数ペア:

[(1, 20556940), (2, 10278470), (4, 5139235), (5, 4111388), (10, 2055694), (20, 1027847), (23, 893780), (29, 708860), (46, 446890), (58, 354430), (67, 306820), (92, 223445), (115, 178756), (116, 177215), (134, 153410), (145, 141772), (230, 89378), (268, 76705), (290, 70886), (335, 61364), (460, 44689), (529, 38860), (580, 35443), (667, 30820), (670, 30682), (1058, 19430), (1334, 15410), (1340, 15341), (1541, 13340), (1943, 10580), (2116, 9715), (2645, 7772), (2668, 7705), (3082, 6670), (3335, 6164), (3886, 5290)]