21487650

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{4621}}^1$

素因数の和:4667

約数の個数: 48

約数和(自身を含む): 55020288

約数和(自身を除く): 33532638

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 31, 50, 62, 75, 93, 150, 155, 186, 310, 465, 775, 930, 1550, 2325, 4621, 4650, 9242, 13863, 23105, 27726, 46210, 69315, 115525, 138630, 143251, 231050, 286502, 346575, 429753, 693150, 716255, 859506, 1432510, 2148765, 3581275, 4297530, 7162550, 10743825, 21487650]

約数ペア:

[(1, 21487650), (2, 10743825), (3, 7162550), (5, 4297530), (6, 3581275), (10, 2148765), (15, 1432510), (25, 859506), (30, 716255), (31, 693150), (50, 429753), (62, 346575), (75, 286502), (93, 231050), (150, 143251), (155, 138630), (186, 115525), (310, 69315), (465, 46210), (775, 27726), (930, 23105), (1550, 13863), (2325, 9242), (4621, 4650)]