21678972

素因数分解:

$2^2\times 3^1\times 7^3\times {\mathrm{23}}^1\times {\mathrm{229}}^1$

素因数の和:280

約数の個数: 96

約数和(自身を含む): 61824000

約数和(自身を除く): 40145028

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 23, 28, 42, 46, 49, 69, 84, 92, 98, 138, 147, 161, 196, 229, 276, 294, 322, 343, 458, 483, 588, 644, 686, 687, 916, 966, 1029, 1127, 1372, 1374, 1603, 1932, 2058, 2254, 2748, 3206, 3381, 4116, 4508, 4809, 5267, 6412, 6762, 7889, 9618, 10534, 11221, 13524, 15778, 15801, 19236, 21068, 22442, 23667, 31556, 31602, 33663, 36869, 44884, 47334, 63204, 67326, 73738, 78547, 94668, 110607, 134652, 147476, 157094, 221214, 235641, 258083, 314188, 442428, 471282, 516166, 774249, 942564, 1032332, 1548498, 1806581, 3096996, 3613162, 5419743, 7226324, 10839486, 21678972]

約数ペア:

[(1, 21678972), (2, 10839486), (3, 7226324), (4, 5419743), (6, 3613162), (7, 3096996), (12, 1806581), (14, 1548498), (21, 1032332), (23, 942564), (28, 774249), (42, 516166), (46, 471282), (49, 442428), (69, 314188), (84, 258083), (92, 235641), (98, 221214), (138, 157094), (147, 147476), (161, 134652), (196, 110607), (229, 94668), (276, 78547), (294, 73738), (322, 67326), (343, 63204), (458, 47334), (483, 44884), (588, 36869), (644, 33663), (686, 31602), (687, 31556), (916, 23667), (966, 22442), (1029, 21068), (1127, 19236), (1372, 15801), (1374, 15778), (1603, 13524), (1932, 11221), (2058, 10534), (2254, 9618), (2748, 7889), (3206, 6762), (3381, 6412), (4116, 5267), (4508, 4809)]