21580985.000000000

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78797}}^1$

素因数の和:78825

約数の個数: 72

約数和(自身を含む): 602331912

約数和(自身を除く): 417946932

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 78797, 157594, 236391, 315188, 393985, 472782, 709173, 787970, 945564, 1024361, 1181955, 1418346, 1575940, 2048722, 2363910, 2836692, 3073083, 3545865, 4097444, 4727820, 5121805, 6146166, 7091730, 9219249, 10243610, 12292332, 14183460, 15365415, 18438498, 20487220, 30730830, 36876996, 46096245, 61461660, 92192490, 184384980]

約数ペア:

[(1, 184384980), (2, 92192490), (3, 61461660), (4, 46096245), (5, 36876996), (6, 30730830), (9, 20487220), (10, 18438498), (12, 15365415), (13, 14183460), (15, 12292332), (18, 10243610), (20, 9219249), (26, 7091730), (30, 6146166), (36, 5121805), (39, 4727820), (45, 4097444), (52, 3545865), (60, 3073083), (65, 2836692), (78, 2363910), (90, 2048722), (117, 1575940), (130, 1418346), (156, 1181955), (180, 1024361), (195, 945564), (234, 787970), (260, 709173), (390, 472782), (468, 393985), (585, 315188), (780, 236391), (1170, 157594), (2340, 78797)]