81301000

素因数分解:

$2^3\times 5^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{389}}^1$

素因数の和:440

約数の個数: 128

約数和(自身を含む): 219024000

約数和(自身を除く): 137723000

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 25, 38, 40, 44, 50, 55, 76, 88, 95, 100, 110, 125, 152, 190, 200, 209, 220, 250, 275, 380, 389, 418, 440, 475, 500, 550, 760, 778, 836, 950, 1000, 1045, 1100, 1375, 1556, 1672, 1900, 1945, 2090, 2200, 2375, 2750, 3112, 3800, 3890, 4180, 4279, 4750, 5225, 5500, 7391, 7780, 8360, 8558, 9500, 9725, 10450, 11000, 14782, 15560, 17116, 19000, 19450, 20900, 21395, 26125, 29564, 34232, 36955, 38900, 41800, 42790, 48625, 52250, 59128, 73910, 77800, 81301, 85580, 97250, 104500, 106975, 147820, 162602, 171160, 184775, 194500, 209000, 213950, 295640, 325204, 369550, 389000, 406505, 427900, 534875, 650408, 739100, 813010, 855800, 923875, 1069750, 1478200, 1626020, 1847750, 2032525, 2139500, 3252040, 3695500, 4065050, 4279000, 7391000, 8130100, 10162625, 16260200, 20325250, 40650500, 81301000]

約数ペア:

[(1, 81301000), (2, 40650500), (4, 20325250), (5, 16260200), (8, 10162625), (10, 8130100), (11, 7391000), (19, 4279000), (20, 4065050), (22, 3695500), (25, 3252040), (38, 2139500), (40, 2032525), (44, 1847750), (50, 1626020), (55, 1478200), (76, 1069750), (88, 923875), (95, 855800), (100, 813010), (110, 739100), (125, 650408), (152, 534875), (190, 427900), (200, 406505), (209, 389000), (220, 369550), (250, 325204), (275, 295640), (380, 213950), (389, 209000), (418, 194500), (440, 184775), (475, 171160), (500, 162602), (550, 147820), (760, 106975), (778, 104500), (836, 97250), (950, 85580), (1000, 81301), (1045, 77800), (1100, 73910), (1375, 59128), (1556, 52250), (1672, 48625), (1900, 42790), (1945, 41800), (2090, 38900), (2200, 36955), (2375, 34232), (2750, 29564), (3112, 26125), (3800, 21395), (3890, 20900), (4180, 19450), (4279, 19000), (4750, 17116), (5225, 15560), (5500, 14782), (7391, 11000), (7780, 10450), (8360, 9725), (8558, 9500)]