21475188

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2749}}^1$

素因数の和:2797

約数の個数: 72

約数和(自身を含む): 64064000

約数和(自身を除く): 42588812

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 31, 36, 42, 62, 63, 84, 93, 124, 126, 186, 217, 252, 279, 372, 434, 558, 651, 868, 1116, 1302, 1953, 2604, 2749, 3906, 5498, 7812, 8247, 10996, 16494, 19243, 24741, 32988, 38486, 49482, 57729, 76972, 85219, 98964, 115458, 170438, 173187, 230916, 255657, 340876, 346374, 511314, 596533, 692748, 766971, 1022628, 1193066, 1533942, 1789599, 2386132, 3067884, 3579198, 5368797, 7158396, 10737594, 21475188]

約数ペア:

[(1, 21475188), (2, 10737594), (3, 7158396), (4, 5368797), (6, 3579198), (7, 3067884), (9, 2386132), (12, 1789599), (14, 1533942), (18, 1193066), (21, 1022628), (28, 766971), (31, 692748), (36, 596533), (42, 511314), (62, 346374), (63, 340876), (84, 255657), (93, 230916), (124, 173187), (126, 170438), (186, 115458), (217, 98964), (252, 85219), (279, 76972), (372, 57729), (434, 49482), (558, 38486), (651, 32988), (868, 24741), (1116, 19243), (1302, 16494), (1953, 10996), (2604, 8247), (2749, 7812), (3906, 5498)]