21013668

素因数分解:

$2^2\times 3^5\times {\mathrm{13}}^1\times {\mathrm{1663}}^1$

素因数の和:1695

約数の個数: 72

約数和(自身を含む): 59358208

約数和(自身を除く): 38344540

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 27, 36, 39, 52, 54, 78, 81, 108, 117, 156, 162, 234, 243, 324, 351, 468, 486, 702, 972, 1053, 1404, 1663, 2106, 3159, 3326, 4212, 4989, 6318, 6652, 9978, 12636, 14967, 19956, 21619, 29934, 43238, 44901, 59868, 64857, 86476, 89802, 129714, 134703, 179604, 194571, 259428, 269406, 389142, 404109, 538812, 583713, 778284, 808218, 1167426, 1616436, 1751139, 2334852, 3502278, 5253417, 7004556, 10506834, 21013668]

約数ペア:

[(1, 21013668), (2, 10506834), (3, 7004556), (4, 5253417), (6, 3502278), (9, 2334852), (12, 1751139), (13, 1616436), (18, 1167426), (26, 808218), (27, 778284), (36, 583713), (39, 538812), (52, 404109), (54, 389142), (78, 269406), (81, 259428), (108, 194571), (117, 179604), (156, 134703), (162, 129714), (234, 89802), (243, 86476), (324, 64857), (351, 59868), (468, 44901), (486, 43238), (702, 29934), (972, 21619), (1053, 19956), (1404, 14967), (1663, 12636), (2106, 9978), (3159, 6652), (3326, 6318), (4212, 4989)]