18911360

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2273}}^1$

素因数の和:2305

約数の個数: 64

約数和(自身を含む): 48709080

約数和(自身を除く): 29797720

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2080, 2273, 4160, 4546, 8320, 9092, 11365, 18184, 22730, 29549, 36368, 45460, 59098, 72736, 90920, 118196, 145472, 147745, 181840, 236392, 290944, 295490, 363680, 472784, 590980, 727360, 945568, 1181960, 1454720, 1891136, 2363920, 3782272, 4727840, 9455680, 18911360]

約数ペア:

[(1, 18911360), (2, 9455680), (4, 4727840), (5, 3782272), (8, 2363920), (10, 1891136), (13, 1454720), (16, 1181960), (20, 945568), (26, 727360), (32, 590980), (40, 472784), (52, 363680), (64, 295490), (65, 290944), (80, 236392), (104, 181840), (128, 147745), (130, 145472), (160, 118196), (208, 90920), (260, 72736), (320, 59098), (416, 45460), (520, 36368), (640, 29549), (832, 22730), (1040, 18184), (1664, 11365), (2080, 9092), (2273, 8320), (4160, 4546)]