21417240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13729}}^1$

素因数の和:13756

約数の個数: 64

約数和(自身を含む): 69199200

約数和(自身を除く): 47781960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13729, 27458, 41187, 54916, 68645, 82374, 109832, 137290, 164748, 178477, 205935, 274580, 329496, 356954, 411870, 535431, 549160, 713908, 823740, 892385, 1070862, 1427816, 1647480, 1784770, 2141724, 2677155, 3569540, 4283448, 5354310, 7139080, 10708620, 21417240]

約数ペア:

[(1, 21417240), (2, 10708620), (3, 7139080), (4, 5354310), (5, 4283448), (6, 3569540), (8, 2677155), (10, 2141724), (12, 1784770), (13, 1647480), (15, 1427816), (20, 1070862), (24, 892385), (26, 823740), (30, 713908), (39, 549160), (40, 535431), (52, 411870), (60, 356954), (65, 329496), (78, 274580), (104, 205935), (120, 178477), (130, 164748), (156, 137290), (195, 109832), (260, 82374), (312, 68645), (390, 54916), (520, 41187), (780, 27458), (1560, 13729)]