18388890

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{13}}^3\times {\mathrm{31}}^1$

素因数の和:86

約数の個数: 128

約数和(自身を含む): 54835200

約数和(自身を除く): 36446310

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 27, 30, 31, 39, 45, 54, 62, 65, 78, 90, 93, 117, 130, 135, 155, 169, 186, 195, 234, 270, 279, 310, 338, 351, 390, 403, 465, 507, 558, 585, 702, 806, 837, 845, 930, 1014, 1170, 1209, 1395, 1521, 1674, 1690, 1755, 2015, 2197, 2418, 2535, 2790, 3042, 3510, 3627, 4030, 4185, 4394, 4563, 5070, 5239, 6045, 6591, 7254, 7605, 8370, 9126, 10478, 10881, 10985, 12090, 13182, 15210, 15717, 18135, 19773, 21762, 21970, 22815, 26195, 31434, 32955, 36270, 39546, 45630, 47151, 52390, 54405, 59319, 65910, 68107, 78585, 94302, 98865, 108810, 118638, 136214, 141453, 157170, 197730, 204321, 235755, 282906, 296595, 340535, 408642, 471510, 593190, 612963, 681070, 707265, 1021605, 1225926, 1414530, 1838889, 2043210, 3064815, 3677778, 6129630, 9194445, 18388890]

約数ペア:

[(1, 18388890), (2, 9194445), (3, 6129630), (5, 3677778), (6, 3064815), (9, 2043210), (10, 1838889), (13, 1414530), (15, 1225926), (18, 1021605), (26, 707265), (27, 681070), (30, 612963), (31, 593190), (39, 471510), (45, 408642), (54, 340535), (62, 296595), (65, 282906), (78, 235755), (90, 204321), (93, 197730), (117, 157170), (130, 141453), (135, 136214), (155, 118638), (169, 108810), (186, 98865), (195, 94302), (234, 78585), (270, 68107), (279, 65910), (310, 59319), (338, 54405), (351, 52390), (390, 47151), (403, 45630), (465, 39546), (507, 36270), (558, 32955), (585, 31434), (702, 26195), (806, 22815), (837, 21970), (845, 21762), (930, 19773), (1014, 18135), (1170, 15717), (1209, 15210), (1395, 13182), (1521, 12090), (1674, 10985), (1690, 10881), (1755, 10478), (2015, 9126), (2197, 8370), (2418, 7605), (2535, 7254), (2790, 6591), (3042, 6045), (3510, 5239), (3627, 5070), (4030, 4563), (4185, 4394)]