21389784

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{383}}^1$

素因数の和:584

約数の個数: 64

約数和(自身を含む): 58060800

約数和(自身を除く): 36671016

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 179, 312, 358, 383, 537, 716, 766, 1074, 1149, 1432, 1532, 2148, 2298, 2327, 3064, 4296, 4596, 4654, 4979, 6981, 9192, 9308, 9958, 13962, 14937, 18616, 19916, 27924, 29874, 39832, 55848, 59748, 68557, 119496, 137114, 205671, 274228, 411342, 548456, 822684, 891241, 1645368, 1782482, 2673723, 3564964, 5347446, 7129928, 10694892, 21389784]

約数ペア:

[(1, 21389784), (2, 10694892), (3, 7129928), (4, 5347446), (6, 3564964), (8, 2673723), (12, 1782482), (13, 1645368), (24, 891241), (26, 822684), (39, 548456), (52, 411342), (78, 274228), (104, 205671), (156, 137114), (179, 119496), (312, 68557), (358, 59748), (383, 55848), (537, 39832), (716, 29874), (766, 27924), (1074, 19916), (1149, 18616), (1432, 14937), (1532, 13962), (2148, 9958), (2298, 9308), (2327, 9192), (3064, 6981), (4296, 4979), (4596, 4654)]