645121665

素因数分解:

$3^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{26113}}^1$

素因数の和:26191

約数の個数: 40

約数和(自身を含む): 1175443368

約数和(自身を除く): 530321703

約数列:

[1, 3, 5, 9, 15, 27, 45, 61, 81, 135, 183, 305, 405, 549, 915, 1647, 2745, 4941, 8235, 24705, 26113, 78339, 130565, 235017, 391695, 705051, 1175085, 1592893, 2115153, 3525255, 4778679, 7964465, 10575765, 14336037, 23893395, 43008111, 71680185, 129024333, 215040555, 645121665]

約数ペア:

[(1, 645121665), (3, 215040555), (5, 129024333), (9, 71680185), (15, 43008111), (27, 23893395), (45, 14336037), (61, 10575765), (81, 7964465), (135, 4778679), (183, 3525255), (305, 2115153), (405, 1592893), (549, 1175085), (915, 705051), (1647, 391695), (2745, 235017), (4941, 130565), (8235, 78339), (24705, 26113)]