19946480

素因数分解:

$2^4\times 5^1\times {\mathrm{167}}^1\times {\mathrm{1493}}^1$

素因数の和:1673

約数の個数: 40

約数和(自身を含む): 46684512

約数和(自身を除く): 26738032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 167, 334, 668, 835, 1336, 1493, 1670, 2672, 2986, 3340, 5972, 6680, 7465, 11944, 13360, 14930, 23888, 29860, 59720, 119440, 249331, 498662, 997324, 1246655, 1994648, 2493310, 3989296, 4986620, 9973240, 19946480]

約数ペア:

[(1, 19946480), (2, 9973240), (4, 4986620), (5, 3989296), (8, 2493310), (10, 1994648), (16, 1246655), (20, 997324), (40, 498662), (80, 249331), (167, 119440), (334, 59720), (668, 29860), (835, 23888), (1336, 14930), (1493, 13360), (1670, 11944), (2672, 7465), (2986, 6680), (3340, 5972)]