311266840

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{863}}^1$

素因数の和:1072

約数の個数: 64

約数和(自身を含む): 716636160

約数和(自身を除く): 405369320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 127, 142, 254, 284, 355, 508, 568, 635, 710, 863, 1016, 1270, 1420, 1726, 2540, 2840, 3452, 4315, 5080, 6904, 8630, 9017, 17260, 18034, 34520, 36068, 45085, 61273, 72136, 90170, 109601, 122546, 180340, 219202, 245092, 306365, 360680, 438404, 490184, 548005, 612730, 876808, 1096010, 1225460, 2192020, 2450920, 4384040, 7781671, 15563342, 31126684, 38908355, 62253368, 77816710, 155633420, 311266840]

約数ペア:

[(1, 311266840), (2, 155633420), (4, 77816710), (5, 62253368), (8, 38908355), (10, 31126684), (20, 15563342), (40, 7781671), (71, 4384040), (127, 2450920), (142, 2192020), (254, 1225460), (284, 1096010), (355, 876808), (508, 612730), (568, 548005), (635, 490184), (710, 438404), (863, 360680), (1016, 306365), (1270, 245092), (1420, 219202), (1726, 180340), (2540, 122546), (2840, 109601), (3452, 90170), (4315, 72136), (5080, 61273), (6904, 45085), (8630, 36068), (9017, 34520), (17260, 18034)]