21709320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1381}}^1$

素因数の和:1526

約数の個数: 64

約数和(自身を含む): 65672640

約数和(自身を除く): 43963320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 131, 262, 393, 524, 655, 786, 1048, 1310, 1381, 1572, 1965, 2620, 2762, 3144, 3930, 4143, 5240, 5524, 6905, 7860, 8286, 11048, 13810, 15720, 16572, 20715, 27620, 33144, 41430, 55240, 82860, 165720, 180911, 361822, 542733, 723644, 904555, 1085466, 1447288, 1809110, 2170932, 2713665, 3618220, 4341864, 5427330, 7236440, 10854660, 21709320]

約数ペア:

[(1, 21709320), (2, 10854660), (3, 7236440), (4, 5427330), (5, 4341864), (6, 3618220), (8, 2713665), (10, 2170932), (12, 1809110), (15, 1447288), (20, 1085466), (24, 904555), (30, 723644), (40, 542733), (60, 361822), (120, 180911), (131, 165720), (262, 82860), (393, 55240), (524, 41430), (655, 33144), (786, 27620), (1048, 20715), (1310, 16572), (1381, 15720), (1572, 13810), (1965, 11048), (2620, 8286), (2762, 7860), (3144, 6905), (3930, 5524), (4143, 5240)]