39999750

素因数分解:

$2^1\times 3^1\times 5^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{401}}^1$

素因数の和:447

約数の個数: 128

約数和(自身を含む): 120407040

約数和(自身を除く): 80407290

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 25, 30, 35, 38, 42, 50, 57, 70, 75, 95, 105, 114, 125, 133, 150, 175, 190, 210, 250, 266, 285, 350, 375, 399, 401, 475, 525, 570, 665, 750, 798, 802, 875, 950, 1050, 1203, 1330, 1425, 1750, 1995, 2005, 2375, 2406, 2625, 2807, 2850, 3325, 3990, 4010, 4750, 5250, 5614, 6015, 6650, 7125, 7619, 8421, 9975, 10025, 12030, 14035, 14250, 15238, 16625, 16842, 19950, 20050, 22857, 28070, 30075, 33250, 38095, 42105, 45714, 49875, 50125, 53333, 60150, 70175, 76190, 84210, 99750, 100250, 106666, 114285, 140350, 150375, 159999, 190475, 210525, 228570, 266665, 300750, 319998, 350875, 380950, 421050, 533330, 571425, 701750, 799995, 952375, 1052625, 1142850, 1333325, 1599990, 1904750, 2105250, 2666650, 2857125, 3999975, 5714250, 6666625, 7999950, 13333250, 19999875, 39999750]

約数ペア:

[(1, 39999750), (2, 19999875), (3, 13333250), (5, 7999950), (6, 6666625), (7, 5714250), (10, 3999975), (14, 2857125), (15, 2666650), (19, 2105250), (21, 1904750), (25, 1599990), (30, 1333325), (35, 1142850), (38, 1052625), (42, 952375), (50, 799995), (57, 701750), (70, 571425), (75, 533330), (95, 421050), (105, 380950), (114, 350875), (125, 319998), (133, 300750), (150, 266665), (175, 228570), (190, 210525), (210, 190475), (250, 159999), (266, 150375), (285, 140350), (350, 114285), (375, 106666), (399, 100250), (401, 99750), (475, 84210), (525, 76190), (570, 70175), (665, 60150), (750, 53333), (798, 50125), (802, 49875), (875, 45714), (950, 42105), (1050, 38095), (1203, 33250), (1330, 30075), (1425, 28070), (1750, 22857), (1995, 20050), (2005, 19950), (2375, 16842), (2406, 16625), (2625, 15238), (2807, 14250), (2850, 14035), (3325, 12030), (3990, 10025), (4010, 9975), (4750, 8421), (5250, 7619), (5614, 7125), (6015, 6650)]