21453840

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{359}}^1$

素因数の和:461

約数の個数: 120

約数和(自身を含む): 73120320

約数和(自身を除く): 51666480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 83, 90, 120, 144, 166, 180, 240, 249, 332, 359, 360, 415, 498, 664, 718, 720, 747, 830, 996, 1077, 1245, 1328, 1436, 1494, 1660, 1795, 1992, 2154, 2490, 2872, 2988, 3231, 3320, 3590, 3735, 3984, 4308, 4980, 5385, 5744, 5976, 6462, 6640, 7180, 7470, 8616, 9960, 10770, 11952, 12924, 14360, 14940, 16155, 17232, 19920, 21540, 25848, 28720, 29797, 29880, 32310, 43080, 51696, 59594, 59760, 64620, 86160, 89391, 119188, 129240, 148985, 178782, 238376, 258480, 268173, 297970, 357564, 446955, 476752, 536346, 595940, 715128, 893910, 1072692, 1191880, 1340865, 1430256, 1787820, 2145384, 2383760, 2681730, 3575640, 4290768, 5363460, 7151280, 10726920, 21453840]

約数ペア:

[(1, 21453840), (2, 10726920), (3, 7151280), (4, 5363460), (5, 4290768), (6, 3575640), (8, 2681730), (9, 2383760), (10, 2145384), (12, 1787820), (15, 1430256), (16, 1340865), (18, 1191880), (20, 1072692), (24, 893910), (30, 715128), (36, 595940), (40, 536346), (45, 476752), (48, 446955), (60, 357564), (72, 297970), (80, 268173), (83, 258480), (90, 238376), (120, 178782), (144, 148985), (166, 129240), (180, 119188), (240, 89391), (249, 86160), (332, 64620), (359, 59760), (360, 59594), (415, 51696), (498, 43080), (664, 32310), (718, 29880), (720, 29797), (747, 28720), (830, 25848), (996, 21540), (1077, 19920), (1245, 17232), (1328, 16155), (1436, 14940), (1494, 14360), (1660, 12924), (1795, 11952), (1992, 10770), (2154, 9960), (2490, 8616), (2872, 7470), (2988, 7180), (3231, 6640), (3320, 6462), (3590, 5976), (3735, 5744), (3984, 5385), (4308, 4980)]