21015384

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{349}}^1$

素因数の和:564

約数の個数: 64

約数和(自身を含む): 57036000

約数和(自身を除く): 36020616

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 193, 312, 349, 386, 579, 698, 772, 1047, 1158, 1396, 1544, 2094, 2316, 2509, 2792, 4188, 4537, 4632, 5018, 7527, 8376, 9074, 10036, 13611, 15054, 18148, 20072, 27222, 30108, 36296, 54444, 60216, 67357, 108888, 134714, 202071, 269428, 404142, 538856, 808284, 875641, 1616568, 1751282, 2626923, 3502564, 5253846, 7005128, 10507692, 21015384]

約数ペア:

[(1, 21015384), (2, 10507692), (3, 7005128), (4, 5253846), (6, 3502564), (8, 2626923), (12, 1751282), (13, 1616568), (24, 875641), (26, 808284), (39, 538856), (52, 404142), (78, 269428), (104, 202071), (156, 134714), (193, 108888), (312, 67357), (349, 60216), (386, 54444), (579, 36296), (698, 30108), (772, 27222), (1047, 20072), (1158, 18148), (1396, 15054), (1544, 13611), (2094, 10036), (2316, 9074), (2509, 8376), (2792, 7527), (4188, 5018), (4537, 4632)]