21000912556

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{491}}^1\times {\mathrm{3413}}^1$

素因数の和:4162

約数の個数: 48

約数和(自身を含む): 39835480608

約数和(自身を除く): 18834568052

約数列:

[1, 2, 4, 13, 26, 52, 241, 482, 491, 964, 982, 1964, 3133, 3413, 6266, 6383, 6826, 12532, 12766, 13652, 25532, 44369, 88738, 118331, 177476, 236662, 473324, 822533, 1538303, 1645066, 1675783, 3076606, 3290132, 3351566, 6153212, 6703132, 10692929, 21385858, 21785179, 42771716, 43570358, 87140716, 403863703, 807727406, 1615454812, 5250228139, 10500456278, 21000912556]

約数ペア:

[(1, 21000912556), (2, 10500456278), (4, 5250228139), (13, 1615454812), (26, 807727406), (52, 403863703), (241, 87140716), (482, 43570358), (491, 42771716), (964, 21785179), (982, 21385858), (1964, 10692929), (3133, 6703132), (3413, 6153212), (6266, 3351566), (6383, 3290132), (6826, 3076606), (12532, 1675783), (12766, 1645066), (13652, 1538303), (25532, 822533), (44369, 473324), (88738, 236662), (118331, 177476)]