78163900

素因数分解:

$2^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:295

約数の個数: 72

約数和(自身を含む): 175301280

約数和(自身を除く): 97137380

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 101, 109, 142, 202, 218, 284, 355, 404, 436, 505, 545, 710, 1010, 1090, 1420, 1775, 2020, 2180, 2525, 2725, 3550, 5050, 5450, 7100, 7171, 7739, 10100, 10900, 11009, 14342, 15478, 22018, 28684, 30956, 35855, 38695, 44036, 55045, 71710, 77390, 110090, 143420, 154780, 179275, 193475, 220180, 275225, 358550, 386950, 550450, 717100, 773900, 781639, 1100900, 1563278, 3126556, 3908195, 7816390, 15632780, 19540975, 39081950, 78163900]

約数ペア:

[(1, 78163900), (2, 39081950), (4, 19540975), (5, 15632780), (10, 7816390), (20, 3908195), (25, 3126556), (50, 1563278), (71, 1100900), (100, 781639), (101, 773900), (109, 717100), (142, 550450), (202, 386950), (218, 358550), (284, 275225), (355, 220180), (404, 193475), (436, 179275), (505, 154780), (545, 143420), (710, 110090), (1010, 77390), (1090, 71710), (1420, 55045), (1775, 44036), (2020, 38695), (2180, 35855), (2525, 30956), (2725, 28684), (3550, 22018), (5050, 15478), (5450, 14342), (7100, 11009), (7171, 10900), (7739, 10100)]