19885580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{409}}^1$

素因数の和:459

約数の個数: 96

約数和(自身を含む): 52073280

約数和(自身を除く): 32187700

約数列:

[1, 2, 4, 5, 10, 11, 13, 17, 20, 22, 26, 34, 44, 52, 55, 65, 68, 85, 110, 130, 143, 170, 187, 220, 221, 260, 286, 340, 374, 409, 442, 572, 715, 748, 818, 884, 935, 1105, 1430, 1636, 1870, 2045, 2210, 2431, 2860, 3740, 4090, 4420, 4499, 4862, 5317, 6953, 8180, 8998, 9724, 10634, 12155, 13906, 17996, 21268, 22495, 24310, 26585, 27812, 34765, 44990, 48620, 53170, 58487, 69530, 76483, 89980, 90389, 106340, 116974, 139060, 152966, 180778, 233948, 292435, 305932, 361556, 382415, 451945, 584870, 764830, 903890, 994279, 1169740, 1529660, 1807780, 1988558, 3977116, 4971395, 9942790, 19885580]

約数ペア:

[(1, 19885580), (2, 9942790), (4, 4971395), (5, 3977116), (10, 1988558), (11, 1807780), (13, 1529660), (17, 1169740), (20, 994279), (22, 903890), (26, 764830), (34, 584870), (44, 451945), (52, 382415), (55, 361556), (65, 305932), (68, 292435), (85, 233948), (110, 180778), (130, 152966), (143, 139060), (170, 116974), (187, 106340), (220, 90389), (221, 89980), (260, 76483), (286, 69530), (340, 58487), (374, 53170), (409, 48620), (442, 44990), (572, 34765), (715, 27812), (748, 26585), (818, 24310), (884, 22495), (935, 21268), (1105, 17996), (1430, 13906), (1636, 12155), (1870, 10634), (2045, 9724), (2210, 8998), (2431, 8180), (2860, 6953), (3740, 5317), (4090, 4862), (4420, 4499)]