78290000

素因数分解:

$2^4\times 5^4\times {\mathrm{7829}}^1$

素因数の和:7857

約数の個数: 50

約数和(自身を含む): 189572130

約数和(自身を除く): 111282130

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2500, 5000, 7829, 10000, 15658, 31316, 39145, 62632, 78290, 125264, 156580, 195725, 313160, 391450, 626320, 782900, 978625, 1565800, 1957250, 3131600, 3914500, 4893125, 7829000, 9786250, 15658000, 19572500, 39145000, 78290000]

約数ペア:

[(1, 78290000), (2, 39145000), (4, 19572500), (5, 15658000), (8, 9786250), (10, 7829000), (16, 4893125), (20, 3914500), (25, 3131600), (40, 1957250), (50, 1565800), (80, 978625), (100, 782900), (125, 626320), (200, 391450), (250, 313160), (400, 195725), (500, 156580), (625, 125264), (1000, 78290), (1250, 62632), (2000, 39145), (2500, 31316), (5000, 15658), (7829, 10000)]