1388900

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1$

素因数の和:93

約数の個数: 72

約数和(自身を含む): 3437280

約数和(自身を除く): 2048380

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 25, 34, 38, 43, 50, 68, 76, 85, 86, 95, 100, 170, 172, 190, 215, 323, 340, 380, 425, 430, 475, 646, 731, 817, 850, 860, 950, 1075, 1292, 1462, 1615, 1634, 1700, 1900, 2150, 2924, 3230, 3268, 3655, 4085, 4300, 6460, 7310, 8075, 8170, 13889, 14620, 16150, 16340, 18275, 20425, 27778, 32300, 36550, 40850, 55556, 69445, 73100, 81700, 138890, 277780, 347225, 694450, 1388900]

約数ペア:

[(1, 1388900), (2, 694450), (4, 347225), (5, 277780), (10, 138890), (17, 81700), (19, 73100), (20, 69445), (25, 55556), (34, 40850), (38, 36550), (43, 32300), (50, 27778), (68, 20425), (76, 18275), (85, 16340), (86, 16150), (95, 14620), (100, 13889), (170, 8170), (172, 8075), (190, 7310), (215, 6460), (323, 4300), (340, 4085), (380, 3655), (425, 3268), (430, 3230), (475, 2924), (646, 2150), (731, 1900), (817, 1700), (850, 1634), (860, 1615), (950, 1462), (1075, 1292)]