397458425

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{89}}^1\times {\mathrm{151}}^1$

素因数の和:283

約数の個数: 72

約数和(自身を含む): 620853120

約数和(自身を除く): 223394695

約数列:

[1, 5, 7, 13, 25, 35, 65, 89, 91, 151, 169, 175, 325, 445, 455, 623, 755, 845, 1057, 1157, 1183, 1963, 2225, 2275, 3115, 3775, 4225, 5285, 5785, 5915, 8099, 9815, 13439, 13741, 15041, 15575, 25519, 26425, 28925, 29575, 40495, 49075, 67195, 68705, 75205, 94073, 105287, 127595, 174707, 178633, 202475, 335975, 343525, 376025, 470365, 526435, 637975, 873535, 893165, 1222949, 2271191, 2351825, 2632175, 4367675, 4465825, 6114745, 11355955, 15898337, 30573725, 56779775, 79491685, 397458425]

約数ペア:

[(1, 397458425), (5, 79491685), (7, 56779775), (13, 30573725), (25, 15898337), (35, 11355955), (65, 6114745), (89, 4465825), (91, 4367675), (151, 2632175), (169, 2351825), (175, 2271191), (325, 1222949), (445, 893165), (455, 873535), (623, 637975), (755, 526435), (845, 470365), (1057, 376025), (1157, 343525), (1183, 335975), (1963, 202475), (2225, 178633), (2275, 174707), (3115, 127595), (3775, 105287), (4225, 94073), (5285, 75205), (5785, 68705), (5915, 67195), (8099, 49075), (9815, 40495), (13439, 29575), (13741, 28925), (15041, 26425), (15575, 25519)]