20113210

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{479}}^1$

素因数の和:535

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 23432390

約数列:

[1, 2, 5, 10, 13, 17, 19, 26, 34, 38, 65, 85, 95, 130, 170, 190, 221, 247, 323, 442, 479, 494, 646, 958, 1105, 1235, 1615, 2210, 2395, 2470, 3230, 4199, 4790, 6227, 8143, 8398, 9101, 12454, 16286, 18202, 20995, 31135, 40715, 41990, 45505, 62270, 81430, 91010, 105859, 118313, 154717, 211718, 236626, 309434, 529295, 591565, 773585, 1058590, 1183130, 1547170, 2011321, 4022642, 10056605, 20113210]

約数ペア:

[(1, 20113210), (2, 10056605), (5, 4022642), (10, 2011321), (13, 1547170), (17, 1183130), (19, 1058590), (26, 773585), (34, 591565), (38, 529295), (65, 309434), (85, 236626), (95, 211718), (130, 154717), (170, 118313), (190, 105859), (221, 91010), (247, 81430), (323, 62270), (442, 45505), (479, 41990), (494, 40715), (646, 31135), (958, 20995), (1105, 18202), (1235, 16286), (1615, 12454), (2210, 9101), (2395, 8398), (2470, 8143), (3230, 6227), (4199, 4790)]