20393499

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{251}}^1$

素因数の和:387

約数の個数: 32

約数和(自身を含む): 32223744

約数和(自身を除く): 11830245

約数列:

[1, 3, 7, 21, 53, 73, 159, 219, 251, 371, 511, 753, 1113, 1533, 1757, 3869, 5271, 11607, 13303, 18323, 27083, 39909, 54969, 81249, 93121, 128261, 279363, 384783, 971119, 2913357, 6797833, 20393499]

約数ペア:

[(1, 20393499), (3, 6797833), (7, 2913357), (21, 971119), (53, 384783), (73, 279363), (159, 128261), (219, 93121), (251, 81249), (371, 54969), (511, 39909), (753, 27083), (1113, 18323), (1533, 13303), (1757, 11607), (3869, 5271)]