18774880

素因数分解:

$2^5\times 5^1\times {\mathrm{271}}^1\times {\mathrm{433}}^1$

素因数の和:719

約数の個数: 48

約数和(自身を含む): 44622144

約数和(自身を除く): 25847264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 271, 433, 542, 866, 1084, 1355, 1732, 2165, 2168, 2710, 3464, 4330, 4336, 5420, 6928, 8660, 8672, 10840, 13856, 17320, 21680, 34640, 43360, 69280, 117343, 234686, 469372, 586715, 938744, 1173430, 1877488, 2346860, 3754976, 4693720, 9387440, 18774880]

約数ペア:

[(1, 18774880), (2, 9387440), (4, 4693720), (5, 3754976), (8, 2346860), (10, 1877488), (16, 1173430), (20, 938744), (32, 586715), (40, 469372), (80, 234686), (160, 117343), (271, 69280), (433, 43360), (542, 34640), (866, 21680), (1084, 17320), (1355, 13856), (1732, 10840), (2165, 8672), (2168, 8660), (2710, 6928), (3464, 5420), (4330, 4336)]