640298256

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{1026119}}^1$

素因数の和:1026143

約数の個数: 40

約数和(自身を含む): 1781344320

約数和(自身を除く): 1141046064

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 312, 624, 1026119, 2052238, 3078357, 4104476, 6156714, 8208952, 12313428, 13339547, 16417904, 24626856, 26679094, 40018641, 49253712, 53358188, 80037282, 106716376, 160074564, 213432752, 320149128, 640298256]

約数ペア:

[(1, 640298256), (2, 320149128), (3, 213432752), (4, 160074564), (6, 106716376), (8, 80037282), (12, 53358188), (13, 49253712), (16, 40018641), (24, 26679094), (26, 24626856), (39, 16417904), (48, 13339547), (52, 12313428), (78, 8208952), (104, 6156714), (156, 4104476), (208, 3078357), (312, 2052238), (624, 1026119)]