21044580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{359}}^1\times {\mathrm{977}}^1$

素因数の和:1348

約数の個数: 48

約数和(自身を含む): 59149440

約数和(自身を除く): 38104860

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 359, 718, 977, 1077, 1436, 1795, 1954, 2154, 2931, 3590, 3908, 4308, 4885, 5385, 5862, 7180, 9770, 10770, 11724, 14655, 19540, 21540, 29310, 58620, 350743, 701486, 1052229, 1402972, 1753715, 2104458, 3507430, 4208916, 5261145, 7014860, 10522290, 21044580]

約数ペア:

[(1, 21044580), (2, 10522290), (3, 7014860), (4, 5261145), (5, 4208916), (6, 3507430), (10, 2104458), (12, 1753715), (15, 1402972), (20, 1052229), (30, 701486), (60, 350743), (359, 58620), (718, 29310), (977, 21540), (1077, 19540), (1436, 14655), (1795, 11724), (1954, 10770), (2154, 9770), (2931, 7180), (3590, 5862), (3908, 5385), (4308, 4885)]