21134531720

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{521}}^1\times {\mathrm{27409}}^1$

素因数の和:27978

約数の個数: 64

約数和(自身を含む): 48933428400

約数和(自身を除く): 27798896680

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 521, 740, 1042, 1480, 2084, 2605, 4168, 5210, 10420, 19277, 20840, 27409, 38554, 54818, 77108, 96385, 109636, 137045, 154216, 192770, 219272, 274090, 385540, 548180, 771080, 1014133, 1096360, 2028266, 4056532, 5070665, 8113064, 10141330, 14280089, 20282660, 28560178, 40565320, 57120356, 71400445, 114240712, 142800890, 285601780, 528363293, 571203560, 1056726586, 2113453172, 2641816465, 4226906344, 5283632930, 10567265860, 21134531720]

約数ペア:

[(1, 21134531720), (2, 10567265860), (4, 5283632930), (5, 4226906344), (8, 2641816465), (10, 2113453172), (20, 1056726586), (37, 571203560), (40, 528363293), (74, 285601780), (148, 142800890), (185, 114240712), (296, 71400445), (370, 57120356), (521, 40565320), (740, 28560178), (1042, 20282660), (1480, 14280089), (2084, 10141330), (2605, 8113064), (4168, 5070665), (5210, 4056532), (10420, 2028266), (19277, 1096360), (20840, 1014133), (27409, 771080), (38554, 548180), (54818, 385540), (77108, 274090), (96385, 219272), (109636, 192770), (137045, 154216)]