28021365

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{379}}^1$

素因数の和:474

約数の個数: 48

約数和(自身を含む): 51217920

約数和(自身を除く): 23196555

約数列:

[1, 3, 5, 9, 15, 31, 45, 53, 93, 155, 159, 265, 279, 379, 465, 477, 795, 1137, 1395, 1643, 1895, 2385, 3411, 4929, 5685, 8215, 11749, 14787, 17055, 20087, 24645, 35247, 58745, 60261, 73935, 100435, 105741, 176235, 180783, 301305, 528705, 622697, 903915, 1868091, 3113485, 5604273, 9340455, 28021365]

約数ペア:

[(1, 28021365), (3, 9340455), (5, 5604273), (9, 3113485), (15, 1868091), (31, 903915), (45, 622697), (53, 528705), (93, 301305), (155, 180783), (159, 176235), (265, 105741), (279, 100435), (379, 73935), (465, 60261), (477, 58745), (795, 35247), (1137, 24645), (1395, 20087), (1643, 17055), (1895, 14787), (2385, 11749), (3411, 8215), (4929, 5685)]