21163220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3539}}^1$

素因数の和:3584

約数の個数: 48

約数和(自身を含む): 49956480

約数和(自身を除く): 28793260

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 65, 92, 115, 130, 230, 260, 299, 460, 598, 1196, 1495, 2990, 3539, 5980, 7078, 14156, 17695, 35390, 46007, 70780, 81397, 92014, 162794, 184028, 230035, 325588, 406985, 460070, 813970, 920140, 1058161, 1627940, 2116322, 4232644, 5290805, 10581610, 21163220]

約数ペア:

[(1, 21163220), (2, 10581610), (4, 5290805), (5, 4232644), (10, 2116322), (13, 1627940), (20, 1058161), (23, 920140), (26, 813970), (46, 460070), (52, 406985), (65, 325588), (92, 230035), (115, 184028), (130, 162794), (230, 92014), (260, 81397), (299, 70780), (460, 46007), (598, 35390), (1196, 17695), (1495, 14156), (2990, 7078), (3539, 5980)]