18719288

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{263}}^1$

素因数の和:348

約数の個数: 64

約数和(自身を含む): 42577920

約数和(自身を除く): 23858632

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 41, 56, 62, 82, 124, 164, 217, 248, 263, 287, 328, 434, 526, 574, 868, 1052, 1148, 1271, 1736, 1841, 2104, 2296, 2542, 3682, 5084, 7364, 8153, 8897, 10168, 10783, 14728, 16306, 17794, 21566, 32612, 35588, 43132, 57071, 65224, 71176, 75481, 86264, 114142, 150962, 228284, 301924, 334273, 456568, 603848, 668546, 1337092, 2339911, 2674184, 4679822, 9359644, 18719288]

約数ペア:

[(1, 18719288), (2, 9359644), (4, 4679822), (7, 2674184), (8, 2339911), (14, 1337092), (28, 668546), (31, 603848), (41, 456568), (56, 334273), (62, 301924), (82, 228284), (124, 150962), (164, 114142), (217, 86264), (248, 75481), (263, 71176), (287, 65224), (328, 57071), (434, 43132), (526, 35588), (574, 32612), (868, 21566), (1052, 17794), (1148, 16306), (1271, 14728), (1736, 10783), (1841, 10168), (2104, 8897), (2296, 8153), (2542, 7364), (3682, 5084)]