20415759

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1$

素因数の和:176

約数の個数: 64

約数和(自身を含む): 36578304

約数和(自身を除く): 16162545

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 53, 83, 91, 119, 159, 221, 249, 273, 357, 371, 581, 663, 689, 901, 1079, 1113, 1411, 1547, 1743, 2067, 2703, 3237, 4233, 4399, 4641, 4823, 6307, 7553, 9877, 11713, 13197, 14469, 18343, 18921, 22659, 29631, 30793, 35139, 55029, 57187, 74783, 81991, 92379, 128401, 171561, 224349, 245973, 385203, 400309, 523481, 972179, 1200927, 1570443, 2916537, 6805253, 20415759]

約数ペア:

[(1, 20415759), (3, 6805253), (7, 2916537), (13, 1570443), (17, 1200927), (21, 972179), (39, 523481), (51, 400309), (53, 385203), (83, 245973), (91, 224349), (119, 171561), (159, 128401), (221, 92379), (249, 81991), (273, 74783), (357, 57187), (371, 55029), (581, 35139), (663, 30793), (689, 29631), (901, 22659), (1079, 18921), (1113, 18343), (1411, 14469), (1547, 13197), (1743, 11713), (2067, 9877), (2703, 7553), (3237, 6307), (4233, 4823), (4399, 4641)]