81398583

素因数分解:

$3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{359}}^1$

素因数の和:492

約数の個数: 48

約数和(自身を含む): 139276800

約数和(自身を除く): 57878217

約数列:

[1, 3, 7, 9, 21, 59, 61, 63, 177, 183, 359, 413, 427, 531, 549, 1077, 1239, 1281, 2513, 3231, 3599, 3717, 3843, 7539, 10797, 21181, 21899, 22617, 25193, 32391, 63543, 65697, 75579, 148267, 153293, 190629, 197091, 226737, 444801, 459879, 1292041, 1334403, 1379637, 3876123, 9044287, 11628369, 27132861, 81398583]

約数ペア:

[(1, 81398583), (3, 27132861), (7, 11628369), (9, 9044287), (21, 3876123), (59, 1379637), (61, 1334403), (63, 1292041), (177, 459879), (183, 444801), (359, 226737), (413, 197091), (427, 190629), (531, 153293), (549, 148267), (1077, 75579), (1239, 65697), (1281, 63543), (2513, 32391), (3231, 25193), (3599, 22617), (3717, 21899), (3843, 21181), (7539, 10797)]