18325100

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:203

約数の個数: 72

約数和(自身を含む): 42184800

約数和(自身を除く): 23859700

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 71, 89, 100, 116, 142, 145, 178, 284, 290, 355, 356, 445, 580, 710, 725, 890, 1420, 1450, 1775, 1780, 2059, 2225, 2581, 2900, 3550, 4118, 4450, 5162, 6319, 7100, 8236, 8900, 10295, 10324, 12638, 12905, 20590, 25276, 25810, 31595, 41180, 51475, 51620, 63190, 64525, 102950, 126380, 129050, 157975, 183251, 205900, 258100, 315950, 366502, 631900, 733004, 916255, 1832510, 3665020, 4581275, 9162550, 18325100]

約数ペア:

[(1, 18325100), (2, 9162550), (4, 4581275), (5, 3665020), (10, 1832510), (20, 916255), (25, 733004), (29, 631900), (50, 366502), (58, 315950), (71, 258100), (89, 205900), (100, 183251), (116, 157975), (142, 129050), (145, 126380), (178, 102950), (284, 64525), (290, 63190), (355, 51620), (356, 51475), (445, 41180), (580, 31595), (710, 25810), (725, 25276), (890, 20590), (1420, 12905), (1450, 12638), (1775, 10324), (1780, 10295), (2059, 8900), (2225, 8236), (2581, 7100), (2900, 6319), (3550, 5162), (4118, 4450)]