20486900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{113}}^1$

素因数の和:178

約数の個数: 108

約数和(自身を含む): 53582508

約数和(自身を除く): 33095608

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 37, 49, 50, 70, 74, 98, 100, 113, 140, 148, 175, 185, 196, 226, 245, 259, 350, 370, 452, 490, 518, 565, 700, 740, 791, 925, 980, 1036, 1130, 1225, 1295, 1582, 1813, 1850, 2260, 2450, 2590, 2825, 3164, 3626, 3700, 3955, 4181, 4900, 5180, 5537, 5650, 6475, 7252, 7910, 8362, 9065, 11074, 11300, 12950, 15820, 16724, 18130, 19775, 20905, 22148, 25900, 27685, 29267, 36260, 39550, 41810, 45325, 55370, 58534, 79100, 83620, 90650, 104525, 110740, 117068, 138425, 146335, 181300, 204869, 209050, 276850, 292670, 409738, 418100, 553700, 585340, 731675, 819476, 1024345, 1463350, 2048690, 2926700, 4097380, 5121725, 10243450, 20486900]

約数ペア:

[(1, 20486900), (2, 10243450), (4, 5121725), (5, 4097380), (7, 2926700), (10, 2048690), (14, 1463350), (20, 1024345), (25, 819476), (28, 731675), (35, 585340), (37, 553700), (49, 418100), (50, 409738), (70, 292670), (74, 276850), (98, 209050), (100, 204869), (113, 181300), (140, 146335), (148, 138425), (175, 117068), (185, 110740), (196, 104525), (226, 90650), (245, 83620), (259, 79100), (350, 58534), (370, 55370), (452, 45325), (490, 41810), (518, 39550), (565, 36260), (700, 29267), (740, 27685), (791, 25900), (925, 22148), (980, 20905), (1036, 19775), (1130, 18130), (1225, 16724), (1295, 15820), (1582, 12950), (1813, 11300), (1850, 11074), (2260, 9065), (2450, 8362), (2590, 7910), (2825, 7252), (3164, 6475), (3626, 5650), (3700, 5537), (3955, 5180), (4181, 4900)]