21467810

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{761}}^1$

素因数の和:819

約数の個数: 64

約数和(自身を含む): 49158144

約数和(自身を除く): 27690334

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 31, 35, 62, 65, 70, 91, 130, 155, 182, 217, 310, 403, 434, 455, 761, 806, 910, 1085, 1522, 2015, 2170, 2821, 3805, 4030, 5327, 5642, 7610, 9893, 10654, 14105, 19786, 23591, 26635, 28210, 47182, 49465, 53270, 69251, 98930, 117955, 138502, 165137, 235910, 306683, 330274, 346255, 613366, 692510, 825685, 1533415, 1651370, 2146781, 3066830, 4293562, 10733905, 21467810]

約数ペア:

[(1, 21467810), (2, 10733905), (5, 4293562), (7, 3066830), (10, 2146781), (13, 1651370), (14, 1533415), (26, 825685), (31, 692510), (35, 613366), (62, 346255), (65, 330274), (70, 306683), (91, 235910), (130, 165137), (155, 138502), (182, 117955), (217, 98930), (310, 69251), (403, 53270), (434, 49465), (455, 47182), (761, 28210), (806, 26635), (910, 23591), (1085, 19786), (1522, 14105), (2015, 10654), (2170, 9893), (2821, 7610), (3805, 5642), (4030, 5327)]