20116720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^2$

素因数の和:107

約数の個数: 120

約数和(自身を含む): 54434016

約数和(自身を除く): 34317296

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 29, 40, 46, 52, 58, 65, 80, 92, 104, 115, 116, 130, 145, 184, 208, 230, 232, 260, 290, 299, 368, 377, 460, 464, 520, 580, 598, 667, 754, 841, 920, 1040, 1160, 1196, 1334, 1495, 1508, 1682, 1840, 1885, 2320, 2392, 2668, 2990, 3016, 3335, 3364, 3770, 4205, 4784, 5336, 5980, 6032, 6670, 6728, 7540, 8410, 8671, 10672, 10933, 11960, 13340, 13456, 15080, 16820, 17342, 19343, 21866, 23920, 26680, 30160, 33640, 34684, 38686, 43355, 43732, 53360, 54665, 67280, 69368, 77372, 86710, 87464, 96715, 109330, 138736, 154744, 173420, 174928, 193430, 218660, 251459, 309488, 346840, 386860, 437320, 502918, 693680, 773720, 874640, 1005836, 1257295, 1547440, 2011672, 2514590, 4023344, 5029180, 10058360, 20116720]

約数ペア:

[(1, 20116720), (2, 10058360), (4, 5029180), (5, 4023344), (8, 2514590), (10, 2011672), (13, 1547440), (16, 1257295), (20, 1005836), (23, 874640), (26, 773720), (29, 693680), (40, 502918), (46, 437320), (52, 386860), (58, 346840), (65, 309488), (80, 251459), (92, 218660), (104, 193430), (115, 174928), (116, 173420), (130, 154744), (145, 138736), (184, 109330), (208, 96715), (230, 87464), (232, 86710), (260, 77372), (290, 69368), (299, 67280), (368, 54665), (377, 53360), (460, 43732), (464, 43355), (520, 38686), (580, 34684), (598, 33640), (667, 30160), (754, 26680), (841, 23920), (920, 21866), (1040, 19343), (1160, 17342), (1196, 16820), (1334, 15080), (1495, 13456), (1508, 13340), (1682, 11960), (1840, 10933), (1885, 10672), (2320, 8671), (2392, 8410), (2668, 7540), (2990, 6728), (3016, 6670), (3335, 6032), (3364, 5980), (3770, 5336), (4205, 4784)]