7885000

素因数分解:

$2^3\times 5^4\times {\mathrm{19}}^1\times {\mathrm{83}}^1$

素因数の和:128

約数の個数: 80

約数和(自身を含む): 19681200

約数和(自身を除く): 11796200

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 83, 95, 100, 125, 152, 166, 190, 200, 250, 332, 380, 415, 475, 500, 625, 664, 760, 830, 950, 1000, 1250, 1577, 1660, 1900, 2075, 2375, 2500, 3154, 3320, 3800, 4150, 4750, 5000, 6308, 7885, 8300, 9500, 10375, 11875, 12616, 15770, 16600, 19000, 20750, 23750, 31540, 39425, 41500, 47500, 51875, 63080, 78850, 83000, 95000, 103750, 157700, 197125, 207500, 315400, 394250, 415000, 788500, 985625, 1577000, 1971250, 3942500, 7885000]

約数ペア:

[(1, 7885000), (2, 3942500), (4, 1971250), (5, 1577000), (8, 985625), (10, 788500), (19, 415000), (20, 394250), (25, 315400), (38, 207500), (40, 197125), (50, 157700), (76, 103750), (83, 95000), (95, 83000), (100, 78850), (125, 63080), (152, 51875), (166, 47500), (190, 41500), (200, 39425), (250, 31540), (332, 23750), (380, 20750), (415, 19000), (475, 16600), (500, 15770), (625, 12616), (664, 11875), (760, 10375), (830, 9500), (950, 8300), (1000, 7885), (1250, 6308), (1577, 5000), (1660, 4750), (1900, 4150), (2075, 3800), (2375, 3320), (2500, 3154)]