21348990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{257}}^1$

素因数の和:354

約数の個数: 96

約数和(自身を含む): 60854976

約数和(自身を除く): 39505986

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 30, 39, 45, 65, 71, 78, 90, 117, 130, 142, 195, 213, 234, 257, 355, 390, 426, 514, 585, 639, 710, 771, 923, 1065, 1170, 1278, 1285, 1542, 1846, 2130, 2313, 2570, 2769, 3195, 3341, 3855, 4615, 4626, 5538, 6390, 6682, 7710, 8307, 9230, 10023, 11565, 13845, 16614, 16705, 18247, 20046, 23130, 27690, 30069, 33410, 36494, 41535, 50115, 54741, 60138, 83070, 91235, 100230, 109482, 150345, 164223, 182470, 237211, 273705, 300690, 328446, 474422, 547410, 711633, 821115, 1186055, 1423266, 1642230, 2134899, 2372110, 3558165, 4269798, 7116330, 10674495, 21348990]

約数ペア:

[(1, 21348990), (2, 10674495), (3, 7116330), (5, 4269798), (6, 3558165), (9, 2372110), (10, 2134899), (13, 1642230), (15, 1423266), (18, 1186055), (26, 821115), (30, 711633), (39, 547410), (45, 474422), (65, 328446), (71, 300690), (78, 273705), (90, 237211), (117, 182470), (130, 164223), (142, 150345), (195, 109482), (213, 100230), (234, 91235), (257, 83070), (355, 60138), (390, 54741), (426, 50115), (514, 41535), (585, 36494), (639, 33410), (710, 30069), (771, 27690), (923, 23130), (1065, 20046), (1170, 18247), (1278, 16705), (1285, 16614), (1542, 13845), (1846, 11565), (2130, 10023), (2313, 9230), (2570, 8307), (2769, 7710), (3195, 6682), (3341, 6390), (3855, 5538), (4615, 4626)]