21287328

素因数分解:

$2^5\times 3^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:378

約数の個数: 96

約数和(自身を含む): 60383232

約数和(自身を除く): 39095904

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 23, 24, 31, 32, 46, 48, 62, 69, 92, 93, 96, 124, 138, 184, 186, 248, 276, 311, 368, 372, 496, 552, 622, 713, 736, 744, 933, 992, 1104, 1244, 1426, 1488, 1866, 2139, 2208, 2488, 2852, 2976, 3732, 4278, 4976, 5704, 7153, 7464, 8556, 9641, 9952, 11408, 14306, 14928, 17112, 19282, 21459, 22816, 28612, 28923, 29856, 34224, 38564, 42918, 57224, 57846, 68448, 77128, 85836, 114448, 115692, 154256, 171672, 221743, 228896, 231384, 308512, 343344, 443486, 462768, 665229, 686688, 886972, 925536, 1330458, 1773944, 2660916, 3547888, 5321832, 7095776, 10643664, 21287328]

約数ペア:

[(1, 21287328), (2, 10643664), (3, 7095776), (4, 5321832), (6, 3547888), (8, 2660916), (12, 1773944), (16, 1330458), (23, 925536), (24, 886972), (31, 686688), (32, 665229), (46, 462768), (48, 443486), (62, 343344), (69, 308512), (92, 231384), (93, 228896), (96, 221743), (124, 171672), (138, 154256), (184, 115692), (186, 114448), (248, 85836), (276, 77128), (311, 68448), (368, 57846), (372, 57224), (496, 42918), (552, 38564), (622, 34224), (713, 29856), (736, 28923), (744, 28612), (933, 22816), (992, 21459), (1104, 19282), (1244, 17112), (1426, 14928), (1488, 14306), (1866, 11408), (2139, 9952), (2208, 9641), (2488, 8556), (2852, 7464), (2976, 7153), (3732, 5704), (4278, 4976)]