81012250

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{331}}^1$

素因数の和:448

約数の個数: 64

約数和(自身を含む): 167806080

約数和(自身を除く): 86793830

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 89, 110, 125, 178, 250, 275, 331, 445, 550, 662, 890, 979, 1375, 1655, 1958, 2225, 2750, 3310, 3641, 4450, 4895, 7282, 8275, 9790, 11125, 16550, 18205, 22250, 24475, 29459, 36410, 41375, 48950, 58918, 82750, 91025, 122375, 147295, 182050, 244750, 294590, 324049, 455125, 648098, 736475, 910250, 1472950, 1620245, 3240490, 3682375, 7364750, 8101225, 16202450, 40506125, 81012250]

約数ペア:

[(1, 81012250), (2, 40506125), (5, 16202450), (10, 8101225), (11, 7364750), (22, 3682375), (25, 3240490), (50, 1620245), (55, 1472950), (89, 910250), (110, 736475), (125, 648098), (178, 455125), (250, 324049), (275, 294590), (331, 244750), (445, 182050), (550, 147295), (662, 122375), (890, 91025), (979, 82750), (1375, 58918), (1655, 48950), (1958, 41375), (2225, 36410), (2750, 29459), (3310, 24475), (3641, 22250), (4450, 18205), (4895, 16550), (7282, 11125), (8275, 9790)]