1620431900

素因数分解:

$2^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{163}}^1\times {\mathrm{1117}}^1$

素因数の和:1383

約数の個数: 72

約数和(自身を含む): 3580864560

約数和(自身を除く): 1960432660

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 89, 100, 163, 178, 326, 356, 445, 652, 815, 890, 1117, 1630, 1780, 2225, 2234, 3260, 4075, 4450, 4468, 5585, 8150, 8900, 11170, 14507, 16300, 22340, 27925, 29014, 55850, 58028, 72535, 99413, 111700, 145070, 182071, 198826, 290140, 362675, 364142, 397652, 497065, 725350, 728284, 910355, 994130, 1450700, 1820710, 1988260, 2485325, 3641420, 4551775, 4970650, 9103550, 9941300, 16204319, 18207100, 32408638, 64817276, 81021595, 162043190, 324086380, 405107975, 810215950, 1620431900]

約数ペア:

[(1, 1620431900), (2, 810215950), (4, 405107975), (5, 324086380), (10, 162043190), (20, 81021595), (25, 64817276), (50, 32408638), (89, 18207100), (100, 16204319), (163, 9941300), (178, 9103550), (326, 4970650), (356, 4551775), (445, 3641420), (652, 2485325), (815, 1988260), (890, 1820710), (1117, 1450700), (1630, 994130), (1780, 910355), (2225, 728284), (2234, 725350), (3260, 497065), (4075, 397652), (4450, 364142), (4468, 362675), (5585, 290140), (8150, 198826), (8900, 182071), (11170, 145070), (14507, 111700), (16300, 99413), (22340, 72535), (27925, 58028), (29014, 55850)]