21622221

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:231

約数の個数: 40

約数和(自身を含む): 34073600

約数和(自身を除く): 12451379

約数列:

[1, 3, 9, 27, 31, 79, 81, 93, 109, 237, 279, 327, 711, 837, 981, 2133, 2449, 2511, 2943, 3379, 6399, 7347, 8611, 8829, 10137, 22041, 25833, 30411, 66123, 77499, 91233, 198369, 232497, 266941, 273699, 697491, 800823, 2402469, 7207407, 21622221]

約数ペア:

[(1, 21622221), (3, 7207407), (9, 2402469), (27, 800823), (31, 697491), (79, 273699), (81, 266941), (93, 232497), (109, 198369), (237, 91233), (279, 77499), (327, 66123), (711, 30411), (837, 25833), (981, 22041), (2133, 10137), (2449, 8829), (2511, 8611), (2943, 7347), (3379, 6399)]