21876687

素因数分解:

$3^2\times 7^2\times {\mathrm{113}}^1\times {\mathrm{439}}^1$

素因数の和:572

約数の個数: 36

約数和(自身を含む): 37168560

約数和(自身を除く): 15291873

約数列:

[1, 3, 7, 9, 21, 49, 63, 113, 147, 339, 439, 441, 791, 1017, 1317, 2373, 3073, 3951, 5537, 7119, 9219, 16611, 21511, 27657, 49607, 49833, 64533, 148821, 193599, 347249, 446463, 1041747, 2430743, 3125241, 7292229, 21876687]

約数ペア:

[(1, 21876687), (3, 7292229), (7, 3125241), (9, 2430743), (21, 1041747), (49, 446463), (63, 347249), (113, 193599), (147, 148821), (339, 64533), (439, 49833), (441, 49607), (791, 27657), (1017, 21511), (1317, 16611), (2373, 9219), (3073, 7119), (3951, 5537)]