18791864

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{311}}^1$

素因数の和:420

約数の個数: 64

約数和(自身を含む): 44029440

約数和(自身を除く): 25237576

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 83, 91, 104, 166, 182, 311, 332, 364, 581, 622, 664, 728, 1079, 1162, 1244, 2158, 2177, 2324, 2488, 4043, 4316, 4354, 4648, 7553, 8086, 8632, 8708, 15106, 16172, 17416, 25813, 28301, 30212, 32344, 51626, 56602, 60424, 103252, 113204, 180691, 206504, 226408, 335569, 361382, 671138, 722764, 1342276, 1445528, 2348983, 2684552, 4697966, 9395932, 18791864]

約数ペア:

[(1, 18791864), (2, 9395932), (4, 4697966), (7, 2684552), (8, 2348983), (13, 1445528), (14, 1342276), (26, 722764), (28, 671138), (52, 361382), (56, 335569), (83, 226408), (91, 206504), (104, 180691), (166, 113204), (182, 103252), (311, 60424), (332, 56602), (364, 51626), (581, 32344), (622, 30212), (664, 28301), (728, 25813), (1079, 17416), (1162, 16172), (1244, 15106), (2158, 8708), (2177, 8632), (2324, 8086), (2488, 7553), (4043, 4648), (4316, 4354)]