28226709

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{149}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 48921600

約数和(自身を除く): 20694891

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 97, 149, 217, 279, 291, 447, 651, 679, 873, 1043, 1341, 1953, 2037, 3007, 3129, 4619, 6111, 9021, 9387, 13857, 14453, 21049, 27063, 32333, 41571, 43359, 63147, 96999, 101171, 130077, 189441, 290997, 303513, 448043, 910539, 1344129, 3136301, 4032387, 9408903, 28226709]

約数ペア:

[(1, 28226709), (3, 9408903), (7, 4032387), (9, 3136301), (21, 1344129), (31, 910539), (63, 448043), (93, 303513), (97, 290997), (149, 189441), (217, 130077), (279, 101171), (291, 96999), (447, 63147), (651, 43359), (679, 41571), (873, 32333), (1043, 27063), (1341, 21049), (1953, 14453), (2037, 13857), (3007, 9387), (3129, 9021), (4619, 6111)]