18880875

素因数分解:

$3^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{1291}}^1$

素因数の和:1325

約数の個数: 48

約数和(自身を含む): 36682464

約数和(自身を除く): 17801589

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 125, 195, 225, 325, 375, 585, 975, 1125, 1291, 1625, 2925, 3873, 4875, 6455, 11619, 14625, 16783, 19365, 32275, 50349, 58095, 83915, 96825, 151047, 161375, 251745, 290475, 419575, 484125, 755235, 1258725, 1452375, 2097875, 3776175, 6293625, 18880875]

約数ペア:

[(1, 18880875), (3, 6293625), (5, 3776175), (9, 2097875), (13, 1452375), (15, 1258725), (25, 755235), (39, 484125), (45, 419575), (65, 290475), (75, 251745), (117, 161375), (125, 151047), (195, 96825), (225, 83915), (325, 58095), (375, 50349), (585, 32275), (975, 19365), (1125, 16783), (1291, 14625), (1625, 11619), (2925, 6455), (3873, 4875)]