1640890720

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{1465081}}^1$

素因数の和:1465103

約数の個数: 48

約数和(自身を含む): 4430407968

約数和(自身を除く): 2789517248

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 1465081, 2930162, 5860324, 7325405, 10255567, 11720648, 14650810, 20511134, 23441296, 29301620, 41022268, 46882592, 51277835, 58603240, 82044536, 102555670, 117206480, 164089072, 205111340, 234412960, 328178144, 410222680, 820445360, 1640890720]

約数ペア:

[(1, 1640890720), (2, 820445360), (4, 410222680), (5, 328178144), (7, 234412960), (8, 205111340), (10, 164089072), (14, 117206480), (16, 102555670), (20, 82044536), (28, 58603240), (32, 51277835), (35, 46882592), (40, 41022268), (56, 29301620), (70, 23441296), (80, 20511134), (112, 14650810), (140, 11720648), (160, 10255567), (224, 7325405), (280, 5860324), (560, 2930162), (1120, 1465081)]