20145209960

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1879}}^1\times {\mathrm{2459}}^1$

素因数の和:4458

約数の個数: 64

約数和(自身を含む): 45785520000

約数和(自身を除く): 25640310040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 1879, 2180, 2459, 3758, 4360, 4918, 7516, 9395, 9836, 12295, 15032, 18790, 19672, 24590, 37580, 49180, 75160, 98360, 204811, 268031, 409622, 536062, 819244, 1024055, 1072124, 1340155, 1638488, 2048110, 2144248, 2680310, 4096220, 4620461, 5360620, 8192440, 9240922, 10721240, 18481844, 23102305, 36963688, 46204610, 92409220, 184818440, 503630249, 1007260498, 2014520996, 2518151245, 4029041992, 5036302490, 10072604980, 20145209960]

約数ペア:

[(1, 20145209960), (2, 10072604980), (4, 5036302490), (5, 4029041992), (8, 2518151245), (10, 2014520996), (20, 1007260498), (40, 503630249), (109, 184818440), (218, 92409220), (436, 46204610), (545, 36963688), (872, 23102305), (1090, 18481844), (1879, 10721240), (2180, 9240922), (2459, 8192440), (3758, 5360620), (4360, 4620461), (4918, 4096220), (7516, 2680310), (9395, 2144248), (9836, 2048110), (12295, 1638488), (15032, 1340155), (18790, 1072124), (19672, 1024055), (24590, 819244), (37580, 536062), (49180, 409622), (75160, 268031), (98360, 204811)]