178420905

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{809}}^1$

素因数の和:875

約数の個数: 72

約数和(自身を含む): 346858200

約数和(自身を除く): 168437295

約数列:

[1, 3, 5, 9, 13, 15, 29, 39, 45, 65, 87, 117, 145, 169, 195, 261, 377, 435, 507, 585, 809, 845, 1131, 1305, 1521, 1885, 2427, 2535, 3393, 4045, 4901, 5655, 7281, 7605, 10517, 12135, 14703, 16965, 23461, 24505, 31551, 36405, 44109, 52585, 70383, 73515, 94653, 117305, 136721, 157755, 211149, 220545, 304993, 351915, 410163, 473265, 683605, 914979, 1055745, 1230489, 1524965, 2050815, 2744937, 3964909, 4574895, 6152445, 11894727, 13724685, 19824545, 35684181, 59473635, 178420905]

約数ペア:

[(1, 178420905), (3, 59473635), (5, 35684181), (9, 19824545), (13, 13724685), (15, 11894727), (29, 6152445), (39, 4574895), (45, 3964909), (65, 2744937), (87, 2050815), (117, 1524965), (145, 1230489), (169, 1055745), (195, 914979), (261, 683605), (377, 473265), (435, 410163), (507, 351915), (585, 304993), (809, 220545), (845, 211149), (1131, 157755), (1305, 136721), (1521, 117305), (1885, 94653), (2427, 73515), (2535, 70383), (3393, 52585), (4045, 44109), (4901, 36405), (5655, 31551), (7281, 24505), (7605, 23461), (10517, 16965), (12135, 14703)]