21356658

素因数分解:

$2^1\times 3^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{983}}^1$

素因数の和:1079

約数の個数: 48

約数和(自身を含む): 49735296

約数和(自身を除く): 28378638

約数列:

[1, 2, 3, 6, 9, 17, 18, 34, 51, 71, 102, 142, 153, 213, 306, 426, 639, 983, 1207, 1278, 1966, 2414, 2949, 3621, 5898, 7242, 8847, 10863, 16711, 17694, 21726, 33422, 50133, 69793, 100266, 139586, 150399, 209379, 300798, 418758, 628137, 1186481, 1256274, 2372962, 3559443, 7118886, 10678329, 21356658]

約数ペア:

[(1, 21356658), (2, 10678329), (3, 7118886), (6, 3559443), (9, 2372962), (17, 1256274), (18, 1186481), (34, 628137), (51, 418758), (71, 300798), (102, 209379), (142, 150399), (153, 139586), (213, 100266), (306, 69793), (426, 50133), (639, 33422), (983, 21726), (1207, 17694), (1278, 16711), (1966, 10863), (2414, 8847), (2949, 7242), (3621, 5898)]