221405968

素因数分解:

$2^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{1483}}^1$

素因数の和:1572

約数の個数: 80

約数和(自身を含む): 518189056

約数和(自身を除く): 296783088

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 43, 56, 62, 86, 112, 124, 172, 217, 248, 301, 344, 434, 496, 602, 688, 868, 1204, 1333, 1483, 1736, 2408, 2666, 2966, 3472, 4816, 5332, 5932, 9331, 10381, 10664, 11864, 18662, 20762, 21328, 23728, 37324, 41524, 45973, 63769, 74648, 83048, 91946, 127538, 149296, 166096, 183892, 255076, 321811, 367784, 446383, 510152, 643622, 735568, 892766, 1020304, 1287244, 1785532, 1976839, 2574488, 3571064, 3953678, 5148976, 7142128, 7907356, 13837873, 15814712, 27675746, 31629424, 55351492, 110702984, 221405968]

約数ペア:

[(1, 221405968), (2, 110702984), (4, 55351492), (7, 31629424), (8, 27675746), (14, 15814712), (16, 13837873), (28, 7907356), (31, 7142128), (43, 5148976), (56, 3953678), (62, 3571064), (86, 2574488), (112, 1976839), (124, 1785532), (172, 1287244), (217, 1020304), (248, 892766), (301, 735568), (344, 643622), (434, 510152), (496, 446383), (602, 367784), (688, 321811), (868, 255076), (1204, 183892), (1333, 166096), (1483, 149296), (1736, 127538), (2408, 91946), (2666, 83048), (2966, 74648), (3472, 63769), (4816, 45973), (5332, 41524), (5932, 37324), (9331, 23728), (10381, 21328), (10664, 20762), (11864, 18662)]