261170078420

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{641}}^1\times {\mathrm{41491}}^1$

素因数の和:42632

約数の個数: 48

約数和(自身を含む): 550444821696

約数和(自身を除く): 289274743276

約数列:

[1, 2, 4, 5, 10, 20, 491, 641, 982, 1282, 1964, 2455, 2564, 3205, 4910, 6410, 9820, 12820, 41491, 82982, 165964, 207455, 314731, 414910, 629462, 829820, 1258924, 1573655, 3147310, 6294620, 20372081, 26595731, 40744162, 53191462, 81488324, 101860405, 106382924, 132978655, 203720810, 265957310, 407441620, 531914620, 13058503921, 26117007842, 52234015684, 65292519605, 130585039210, 261170078420]

約数ペア:

[(1, 261170078420), (2, 130585039210), (4, 65292519605), (5, 52234015684), (10, 26117007842), (20, 13058503921), (491, 531914620), (641, 407441620), (982, 265957310), (1282, 203720810), (1964, 132978655), (2455, 106382924), (2564, 101860405), (3205, 81488324), (4910, 53191462), (6410, 40744162), (9820, 26595731), (12820, 20372081), (41491, 6294620), (82982, 3147310), (165964, 1573655), (207455, 1258924), (314731, 829820), (414910, 629462)]