207916875

素因数分解:

$3^5\times 5^4\times {\mathrm{37}}^2$

素因数の和:109

約数の個数: 90

約数和(自身を含む): 399987588

約数和(自身を除く): 192070713

約数列:

[1, 3, 5, 9, 15, 25, 27, 37, 45, 75, 81, 111, 125, 135, 185, 225, 243, 333, 375, 405, 555, 625, 675, 925, 999, 1125, 1215, 1369, 1665, 1875, 2025, 2775, 2997, 3375, 4107, 4625, 4995, 5625, 6075, 6845, 8325, 8991, 10125, 12321, 13875, 14985, 16875, 20535, 23125, 24975, 30375, 34225, 36963, 41625, 44955, 50625, 61605, 69375, 74925, 102675, 110889, 124875, 151875, 171125, 184815, 208125, 224775, 308025, 332667, 374625, 513375, 554445, 624375, 855625, 924075, 1123875, 1540125, 1663335, 1873125, 2566875, 2772225, 4620375, 5619375, 7700625, 8316675, 13861125, 23101875, 41583375, 69305625, 207916875]

約数ペア:

[(1, 207916875), (3, 69305625), (5, 41583375), (9, 23101875), (15, 13861125), (25, 8316675), (27, 7700625), (37, 5619375), (45, 4620375), (75, 2772225), (81, 2566875), (111, 1873125), (125, 1663335), (135, 1540125), (185, 1123875), (225, 924075), (243, 855625), (333, 624375), (375, 554445), (405, 513375), (555, 374625), (625, 332667), (675, 308025), (925, 224775), (999, 208125), (1125, 184815), (1215, 171125), (1369, 151875), (1665, 124875), (1875, 110889), (2025, 102675), (2775, 74925), (2997, 69375), (3375, 61605), (4107, 50625), (4625, 44955), (4995, 41625), (5625, 36963), (6075, 34225), (6845, 30375), (8325, 24975), (8991, 23125), (10125, 20535), (12321, 16875), (13875, 14985)]