81227800

素因数分解:

$2^3\times 5^2\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:245

約数の個数: 96

約数和(自身を含む): 196862400

約数和(自身を除く): 115634600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 53, 79, 97, 100, 106, 158, 194, 200, 212, 265, 316, 388, 395, 424, 485, 530, 632, 776, 790, 970, 1060, 1325, 1580, 1940, 1975, 2120, 2425, 2650, 3160, 3880, 3950, 4187, 4850, 5141, 5300, 7663, 7900, 8374, 9700, 10282, 10600, 15326, 15800, 16748, 19400, 20564, 20935, 25705, 30652, 33496, 38315, 41128, 41870, 51410, 61304, 76630, 83740, 102820, 104675, 128525, 153260, 167480, 191575, 205640, 209350, 257050, 306520, 383150, 406139, 418700, 514100, 766300, 812278, 837400, 1028200, 1532600, 1624556, 2030695, 3249112, 4061390, 8122780, 10153475, 16245560, 20306950, 40613900, 81227800]

約数ペア:

[(1, 81227800), (2, 40613900), (4, 20306950), (5, 16245560), (8, 10153475), (10, 8122780), (20, 4061390), (25, 3249112), (40, 2030695), (50, 1624556), (53, 1532600), (79, 1028200), (97, 837400), (100, 812278), (106, 766300), (158, 514100), (194, 418700), (200, 406139), (212, 383150), (265, 306520), (316, 257050), (388, 209350), (395, 205640), (424, 191575), (485, 167480), (530, 153260), (632, 128525), (776, 104675), (790, 102820), (970, 83740), (1060, 76630), (1325, 61304), (1580, 51410), (1940, 41870), (1975, 41128), (2120, 38315), (2425, 33496), (2650, 30652), (3160, 25705), (3880, 20935), (3950, 20564), (4187, 19400), (4850, 16748), (5141, 15800), (5300, 15326), (7663, 10600), (7900, 10282), (8374, 9700)]