638685

素因数分解:

$3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1$

素因数の和:119

約数の個数: 40

約数和(自身を含む): 1219680

約数和(自身を除く): 580995

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 81, 83, 95, 135, 171, 249, 285, 405, 415, 513, 747, 855, 1245, 1539, 1577, 2241, 2565, 3735, 4731, 6723, 7695, 7885, 11205, 14193, 23655, 33615, 42579, 70965, 127737, 212895, 638685]

約数ペア:

[(1, 638685), (3, 212895), (5, 127737), (9, 70965), (15, 42579), (19, 33615), (27, 23655), (45, 14193), (57, 11205), (81, 7885), (83, 7695), (95, 6723), (135, 4731), (171, 3735), (249, 2565), (285, 2241), (405, 1577), (415, 1539), (513, 1245), (747, 855)]