18879435

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1$

素因数の和:117

約数の個数: 96

約数和(自身を含む): 38413440

約数和(自身を除く): 19534005

約数列:

[1, 3, 5, 9, 15, 17, 23, 29, 37, 45, 51, 69, 85, 87, 111, 115, 145, 153, 185, 207, 255, 261, 333, 345, 391, 435, 493, 555, 629, 667, 765, 851, 1035, 1073, 1173, 1305, 1479, 1665, 1887, 1955, 2001, 2465, 2553, 3145, 3219, 3335, 3519, 4255, 4437, 5365, 5661, 5865, 6003, 7395, 7659, 9435, 9657, 10005, 11339, 12765, 14467, 16095, 17595, 18241, 22185, 24679, 28305, 30015, 34017, 38295, 43401, 48285, 54723, 56695, 72335, 74037, 91205, 102051, 123395, 130203, 164169, 170085, 217005, 222111, 273615, 370185, 419543, 510255, 651015, 820845, 1110555, 1258629, 2097715, 3775887, 6293145, 18879435]

約数ペア:

[(1, 18879435), (3, 6293145), (5, 3775887), (9, 2097715), (15, 1258629), (17, 1110555), (23, 820845), (29, 651015), (37, 510255), (45, 419543), (51, 370185), (69, 273615), (85, 222111), (87, 217005), (111, 170085), (115, 164169), (145, 130203), (153, 123395), (185, 102051), (207, 91205), (255, 74037), (261, 72335), (333, 56695), (345, 54723), (391, 48285), (435, 43401), (493, 38295), (555, 34017), (629, 30015), (667, 28305), (765, 24679), (851, 22185), (1035, 18241), (1073, 17595), (1173, 16095), (1305, 14467), (1479, 12765), (1665, 11339), (1887, 10005), (1955, 9657), (2001, 9435), (2465, 7659), (2553, 7395), (3145, 6003), (3219, 5865), (3335, 5661), (3519, 5365), (4255, 4437)]