221821821

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:165

約数の個数: 96

約数和(自身を含む): 387459072

約数和(自身を除く): 165637251

約数列:

[1, 3, 9, 13, 23, 27, 39, 43, 69, 71, 81, 117, 129, 207, 213, 243, 299, 351, 387, 559, 621, 639, 897, 923, 989, 1053, 1161, 1633, 1677, 1863, 1917, 2691, 2769, 2967, 3053, 3159, 3483, 4899, 5031, 5589, 5751, 8073, 8307, 8901, 9159, 10449, 12857, 14697, 15093, 17253, 21229, 24219, 24921, 26703, 27477, 38571, 39689, 44091, 45279, 63687, 70219, 72657, 74763, 80109, 82431, 115713, 119067, 132273, 135837, 191061, 210657, 224289, 240327, 247293, 347139, 357201, 396819, 573183, 631971, 741879, 912847, 1041417, 1071603, 1719549, 1895913, 2738541, 3124251, 3214809, 5158647, 5687739, 8215623, 9644427, 17063217, 24646869, 73940607, 221821821]

約数ペア:

[(1, 221821821), (3, 73940607), (9, 24646869), (13, 17063217), (23, 9644427), (27, 8215623), (39, 5687739), (43, 5158647), (69, 3214809), (71, 3124251), (81, 2738541), (117, 1895913), (129, 1719549), (207, 1071603), (213, 1041417), (243, 912847), (299, 741879), (351, 631971), (387, 573183), (559, 396819), (621, 357201), (639, 347139), (897, 247293), (923, 240327), (989, 224289), (1053, 210657), (1161, 191061), (1633, 135837), (1677, 132273), (1863, 119067), (1917, 115713), (2691, 82431), (2769, 80109), (2967, 74763), (3053, 72657), (3159, 70219), (3483, 63687), (4899, 45279), (5031, 44091), (5589, 39689), (5751, 38571), (8073, 27477), (8307, 26703), (8901, 24921), (9159, 24219), (10449, 21229), (12857, 17253), (14697, 15093)]