80400780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23509}}^1$

素因数の和:23543

約数の個数: 72

約数和(自身を含む): 256729200

約数和(自身を除く): 176328420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 23509, 47018, 70527, 94036, 117545, 141054, 211581, 235090, 282108, 352635, 423162, 446671, 470180, 705270, 846324, 893342, 1057905, 1340013, 1410540, 1786684, 2115810, 2233355, 2680026, 4020039, 4231620, 4466710, 5360052, 6700065, 8040078, 8933420, 13400130, 16080156, 20100195, 26800260, 40200390, 80400780]

約数ペア:

[(1, 80400780), (2, 40200390), (3, 26800260), (4, 20100195), (5, 16080156), (6, 13400130), (9, 8933420), (10, 8040078), (12, 6700065), (15, 5360052), (18, 4466710), (19, 4231620), (20, 4020039), (30, 2680026), (36, 2233355), (38, 2115810), (45, 1786684), (57, 1410540), (60, 1340013), (76, 1057905), (90, 893342), (95, 846324), (114, 705270), (171, 470180), (180, 446671), (190, 423162), (228, 352635), (285, 282108), (342, 235090), (380, 211581), (570, 141054), (684, 117545), (855, 94036), (1140, 70527), (1710, 47018), (3420, 23509)]