18628575

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{137}}^1$

素因数の和:201

約数の個数: 72

約数和(自身を含む): 37064592

約数和(自身を除く): 18436017

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 37, 49, 75, 105, 111, 137, 147, 175, 185, 245, 259, 411, 525, 555, 685, 735, 777, 925, 959, 1225, 1295, 1813, 2055, 2775, 2877, 3425, 3675, 3885, 4795, 5069, 5439, 6475, 6713, 9065, 10275, 14385, 15207, 19425, 20139, 23975, 25345, 27195, 33565, 35483, 45325, 71925, 76035, 100695, 106449, 126725, 135975, 167825, 177415, 248381, 380175, 503475, 532245, 745143, 887075, 1241905, 2661225, 3725715, 6209525, 18628575]

約数ペア:

[(1, 18628575), (3, 6209525), (5, 3725715), (7, 2661225), (15, 1241905), (21, 887075), (25, 745143), (35, 532245), (37, 503475), (49, 380175), (75, 248381), (105, 177415), (111, 167825), (137, 135975), (147, 126725), (175, 106449), (185, 100695), (245, 76035), (259, 71925), (411, 45325), (525, 35483), (555, 33565), (685, 27195), (735, 25345), (777, 23975), (925, 20139), (959, 19425), (1225, 15207), (1295, 14385), (1813, 10275), (2055, 9065), (2775, 6713), (2877, 6475), (3425, 5439), (3675, 5069), (3885, 4795)]