18664724

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 36867600

約数和(自身を除く): 18202876

約数列:

[1, 2, 4, 13, 26, 37, 52, 74, 89, 109, 148, 178, 218, 356, 436, 481, 962, 1157, 1417, 1924, 2314, 2834, 3293, 4033, 4628, 5668, 6586, 8066, 9701, 13172, 16132, 19402, 38804, 42809, 52429, 85618, 104858, 126113, 171236, 209716, 252226, 358937, 504452, 717874, 1435748, 4666181, 9332362, 18664724]

約数ペア:

[(1, 18664724), (2, 9332362), (4, 4666181), (13, 1435748), (26, 717874), (37, 504452), (52, 358937), (74, 252226), (89, 209716), (109, 171236), (148, 126113), (178, 104858), (218, 85618), (356, 52429), (436, 42809), (481, 38804), (962, 19402), (1157, 16132), (1417, 13172), (1924, 9701), (2314, 8066), (2834, 6586), (3293, 5668), (4033, 4628)]