21459942

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{839}}^1$

素因数の和:890

約数の個数: 72

約数和(自身を含む): 56019600

約数和(自身を除く): 34559658

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 29, 42, 49, 58, 63, 87, 98, 126, 147, 174, 203, 261, 294, 406, 441, 522, 609, 839, 882, 1218, 1421, 1678, 1827, 2517, 2842, 3654, 4263, 5034, 5873, 7551, 8526, 11746, 12789, 15102, 17619, 24331, 25578, 35238, 41111, 48662, 52857, 72993, 82222, 105714, 123333, 145986, 170317, 218979, 246666, 340634, 369999, 437958, 510951, 739998, 1021902, 1192219, 1532853, 2384438, 3065706, 3576657, 7153314, 10729971, 21459942]

約数ペア:

[(1, 21459942), (2, 10729971), (3, 7153314), (6, 3576657), (7, 3065706), (9, 2384438), (14, 1532853), (18, 1192219), (21, 1021902), (29, 739998), (42, 510951), (49, 437958), (58, 369999), (63, 340634), (87, 246666), (98, 218979), (126, 170317), (147, 145986), (174, 123333), (203, 105714), (261, 82222), (294, 72993), (406, 52857), (441, 48662), (522, 41111), (609, 35238), (839, 25578), (882, 24331), (1218, 17619), (1421, 15102), (1678, 12789), (1827, 11746), (2517, 8526), (2842, 7551), (3654, 5873), (4263, 5034)]