21376775

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1$

素因数の和:200

約数の個数: 48

約数和(自身を含む): 32569344

約数和(自身を除く): 11192569

約数列:

[1, 5, 7, 23, 25, 35, 47, 113, 115, 161, 175, 235, 329, 565, 575, 791, 805, 1081, 1175, 1645, 2599, 2825, 3955, 4025, 5311, 5405, 7567, 8225, 12995, 18193, 19775, 26555, 27025, 37177, 37835, 64975, 90965, 122153, 132775, 185885, 189175, 454825, 610765, 855071, 929425, 3053825, 4275355, 21376775]

約数ペア:

[(1, 21376775), (5, 4275355), (7, 3053825), (23, 929425), (25, 855071), (35, 610765), (47, 454825), (113, 189175), (115, 185885), (161, 132775), (175, 122153), (235, 90965), (329, 64975), (565, 37835), (575, 37177), (791, 27025), (805, 26555), (1081, 19775), (1175, 18193), (1645, 12995), (2599, 8225), (2825, 7567), (3955, 5405), (4025, 5311)]