21400584

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{233}}^1$

素因数の和:374

約数の個数: 64

約数和(自身を含む): 55598400

約数和(自身を除く): 34197816

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 86, 89, 129, 172, 178, 233, 258, 267, 344, 356, 466, 516, 534, 699, 712, 932, 1032, 1068, 1398, 1864, 2136, 2796, 3827, 5592, 7654, 10019, 11481, 15308, 20038, 20737, 22962, 30057, 30616, 40076, 41474, 45924, 60114, 62211, 80152, 82948, 91848, 120228, 124422, 165896, 240456, 248844, 497688, 891691, 1783382, 2675073, 3566764, 5350146, 7133528, 10700292, 21400584]

約数ペア:

[(1, 21400584), (2, 10700292), (3, 7133528), (4, 5350146), (6, 3566764), (8, 2675073), (12, 1783382), (24, 891691), (43, 497688), (86, 248844), (89, 240456), (129, 165896), (172, 124422), (178, 120228), (233, 91848), (258, 82948), (267, 80152), (344, 62211), (356, 60114), (466, 45924), (516, 41474), (534, 40076), (699, 30616), (712, 30057), (932, 22962), (1032, 20737), (1068, 20038), (1398, 15308), (1864, 11481), (2136, 10019), (2796, 7654), (3827, 5592)]