18508204

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:191

約数の個数: 72

約数和(自身を含む): 40582080

約数和(自身を除く): 22073876

約数列:

[1, 2, 4, 11, 13, 19, 22, 26, 38, 44, 52, 76, 131, 143, 169, 209, 247, 262, 286, 338, 418, 494, 524, 572, 676, 836, 988, 1441, 1703, 1859, 2489, 2717, 2882, 3211, 3406, 3718, 4978, 5434, 5764, 6422, 6812, 7436, 9956, 10868, 12844, 18733, 22139, 27379, 32357, 35321, 37466, 44278, 54758, 64714, 70642, 74932, 88556, 109516, 129428, 141284, 243529, 355927, 420641, 487058, 711854, 841282, 974116, 1423708, 1682564, 4627051, 9254102, 18508204]

約数ペア:

[(1, 18508204), (2, 9254102), (4, 4627051), (11, 1682564), (13, 1423708), (19, 974116), (22, 841282), (26, 711854), (38, 487058), (44, 420641), (52, 355927), (76, 243529), (131, 141284), (143, 129428), (169, 109516), (209, 88556), (247, 74932), (262, 70642), (286, 64714), (338, 54758), (418, 44278), (494, 37466), (524, 35321), (572, 32357), (676, 27379), (836, 22139), (988, 18733), (1441, 12844), (1703, 10868), (1859, 9956), (2489, 7436), (2717, 6812), (2882, 6422), (3211, 5764), (3406, 5434), (3718, 4978)]