130001780

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^2\times {\mathrm{59}}^1\times {\mathrm{131}}^1$

素因数の和:257

約数の個数: 72

約数和(自身を含む): 289729440

約数和(自身を除く): 159727660

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 59, 116, 118, 131, 145, 236, 262, 290, 295, 524, 580, 590, 655, 841, 1180, 1310, 1682, 1711, 2620, 3364, 3422, 3799, 4205, 6844, 7598, 7729, 8410, 8555, 15196, 15458, 16820, 17110, 18995, 30916, 34220, 37990, 38645, 49619, 75980, 77290, 99238, 110171, 154580, 198476, 220342, 224141, 248095, 440684, 448282, 496190, 550855, 896564, 992380, 1101710, 1120705, 2203420, 2241410, 4482820, 6500089, 13000178, 26000356, 32500445, 65000890, 130001780]

約数ペア:

[(1, 130001780), (2, 65000890), (4, 32500445), (5, 26000356), (10, 13000178), (20, 6500089), (29, 4482820), (58, 2241410), (59, 2203420), (116, 1120705), (118, 1101710), (131, 992380), (145, 896564), (236, 550855), (262, 496190), (290, 448282), (295, 440684), (524, 248095), (580, 224141), (590, 220342), (655, 198476), (841, 154580), (1180, 110171), (1310, 99238), (1682, 77290), (1711, 75980), (2620, 49619), (3364, 38645), (3422, 37990), (3799, 34220), (4205, 30916), (6844, 18995), (7598, 17110), (7729, 16820), (8410, 15458), (8555, 15196)]