18745384

素因数分解:

$2^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1$

素因数の和:242

約数の個数: 64

約数和(自身を含む): 42134400

約数和(自身を除く): 23389016

約数列:

[1, 2, 4, 7, 8, 14, 28, 37, 56, 74, 83, 109, 148, 166, 218, 259, 296, 332, 436, 518, 581, 664, 763, 872, 1036, 1162, 1526, 2072, 2324, 3052, 3071, 4033, 4648, 6104, 6142, 8066, 9047, 12284, 16132, 18094, 21497, 24568, 28231, 32264, 36188, 42994, 56462, 63329, 72376, 85988, 112924, 126658, 171976, 225848, 253316, 334739, 506632, 669478, 1338956, 2343173, 2677912, 4686346, 9372692, 18745384]

約数ペア:

[(1, 18745384), (2, 9372692), (4, 4686346), (7, 2677912), (8, 2343173), (14, 1338956), (28, 669478), (37, 506632), (56, 334739), (74, 253316), (83, 225848), (109, 171976), (148, 126658), (166, 112924), (218, 85988), (259, 72376), (296, 63329), (332, 56462), (436, 42994), (518, 36188), (581, 32264), (664, 28231), (763, 24568), (872, 21497), (1036, 18094), (1162, 16132), (1526, 12284), (2072, 9047), (2324, 8066), (3052, 6142), (3071, 6104), (4033, 4648)]