21342620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:171

約数の個数: 96

約数和(自身を含む): 52157952

約数和(自身を除く): 30815332

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 43, 46, 52, 65, 83, 86, 92, 115, 130, 166, 172, 215, 230, 260, 299, 332, 415, 430, 460, 559, 598, 830, 860, 989, 1079, 1118, 1196, 1495, 1660, 1909, 1978, 2158, 2236, 2795, 2990, 3569, 3818, 3956, 4316, 4945, 5395, 5590, 5980, 7138, 7636, 9545, 9890, 10790, 11180, 12857, 14276, 17845, 19090, 19780, 21580, 24817, 25714, 35690, 38180, 46397, 49634, 51428, 64285, 71380, 82087, 92794, 99268, 124085, 128570, 164174, 185588, 231985, 248170, 257140, 328348, 410435, 463970, 496340, 820870, 927940, 1067131, 1641740, 2134262, 4268524, 5335655, 10671310, 21342620]

約数ペア:

[(1, 21342620), (2, 10671310), (4, 5335655), (5, 4268524), (10, 2134262), (13, 1641740), (20, 1067131), (23, 927940), (26, 820870), (43, 496340), (46, 463970), (52, 410435), (65, 328348), (83, 257140), (86, 248170), (92, 231985), (115, 185588), (130, 164174), (166, 128570), (172, 124085), (215, 99268), (230, 92794), (260, 82087), (299, 71380), (332, 64285), (415, 51428), (430, 49634), (460, 46397), (559, 38180), (598, 35690), (830, 25714), (860, 24817), (989, 21580), (1079, 19780), (1118, 19090), (1196, 17845), (1495, 14276), (1660, 12857), (1909, 11180), (1978, 10790), (2158, 9890), (2236, 9545), (2795, 7636), (2990, 7138), (3569, 5980), (3818, 5590), (3956, 5395), (4316, 4945)]