21291816

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{9749}}^1$

素因数の和:9778

約数の個数: 64

約数和(自身を含む): 65520000

約数和(自身を除く): 44228184

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 21, 24, 26, 28, 39, 42, 52, 56, 78, 84, 91, 104, 156, 168, 182, 273, 312, 364, 546, 728, 1092, 2184, 9749, 19498, 29247, 38996, 58494, 68243, 77992, 116988, 126737, 136486, 204729, 233976, 253474, 272972, 380211, 409458, 506948, 545944, 760422, 818916, 887159, 1013896, 1520844, 1637832, 1774318, 2661477, 3041688, 3548636, 5322954, 7097272, 10645908, 21291816]

約数ペア:

[(1, 21291816), (2, 10645908), (3, 7097272), (4, 5322954), (6, 3548636), (7, 3041688), (8, 2661477), (12, 1774318), (13, 1637832), (14, 1520844), (21, 1013896), (24, 887159), (26, 818916), (28, 760422), (39, 545944), (42, 506948), (52, 409458), (56, 380211), (78, 272972), (84, 253474), (91, 233976), (104, 204729), (156, 136486), (168, 126737), (182, 116988), (273, 77992), (312, 68243), (364, 58494), (546, 38996), (728, 29247), (1092, 19498), (2184, 9749)]