18995715

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:154

約数の個数: 80

約数和(自身を含む): 37635840

約数和(自身を除く): 18640125

約数列:

[1, 3, 5, 9, 15, 17, 27, 31, 45, 51, 81, 85, 89, 93, 135, 153, 155, 255, 267, 279, 405, 445, 459, 465, 527, 765, 801, 837, 1335, 1377, 1395, 1513, 1581, 2295, 2403, 2511, 2635, 2759, 4005, 4185, 4539, 4743, 6885, 7209, 7565, 7905, 8277, 12015, 12555, 13617, 13795, 14229, 22695, 23715, 24831, 36045, 40851, 41385, 42687, 46903, 68085, 71145, 74493, 122553, 124155, 140709, 204255, 213435, 223479, 234515, 372465, 422127, 612765, 703545, 1117395, 1266381, 2110635, 3799143, 6331905, 18995715]

約数ペア:

[(1, 18995715), (3, 6331905), (5, 3799143), (9, 2110635), (15, 1266381), (17, 1117395), (27, 703545), (31, 612765), (45, 422127), (51, 372465), (81, 234515), (85, 223479), (89, 213435), (93, 204255), (135, 140709), (153, 124155), (155, 122553), (255, 74493), (267, 71145), (279, 68085), (405, 46903), (445, 42687), (459, 41385), (465, 40851), (527, 36045), (765, 24831), (801, 23715), (837, 22695), (1335, 14229), (1377, 13795), (1395, 13617), (1513, 12555), (1581, 12015), (2295, 8277), (2403, 7905), (2511, 7565), (2635, 7209), (2759, 6885), (4005, 4743), (4185, 4539)]