40375000

素因数分解:

$2^3\times 5^6\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:72

約数の個数: 112

約数和(自身を含む): 105467400

約数和(自身を除く): 65092400

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 25, 34, 38, 40, 50, 68, 76, 85, 95, 100, 125, 136, 152, 170, 190, 200, 250, 323, 340, 380, 425, 475, 500, 625, 646, 680, 760, 850, 950, 1000, 1250, 1292, 1615, 1700, 1900, 2125, 2375, 2500, 2584, 3125, 3230, 3400, 3800, 4250, 4750, 5000, 6250, 6460, 8075, 8500, 9500, 10625, 11875, 12500, 12920, 15625, 16150, 17000, 19000, 21250, 23750, 25000, 31250, 32300, 40375, 42500, 47500, 53125, 59375, 62500, 64600, 80750, 85000, 95000, 106250, 118750, 125000, 161500, 201875, 212500, 237500, 265625, 296875, 323000, 403750, 425000, 475000, 531250, 593750, 807500, 1009375, 1062500, 1187500, 1615000, 2018750, 2125000, 2375000, 4037500, 5046875, 8075000, 10093750, 20187500, 40375000]

約数ペア:

[(1, 40375000), (2, 20187500), (4, 10093750), (5, 8075000), (8, 5046875), (10, 4037500), (17, 2375000), (19, 2125000), (20, 2018750), (25, 1615000), (34, 1187500), (38, 1062500), (40, 1009375), (50, 807500), (68, 593750), (76, 531250), (85, 475000), (95, 425000), (100, 403750), (125, 323000), (136, 296875), (152, 265625), (170, 237500), (190, 212500), (200, 201875), (250, 161500), (323, 125000), (340, 118750), (380, 106250), (425, 95000), (475, 85000), (500, 80750), (625, 64600), (646, 62500), (680, 59375), (760, 53125), (850, 47500), (950, 42500), (1000, 40375), (1250, 32300), (1292, 31250), (1615, 25000), (1700, 23750), (1900, 21250), (2125, 19000), (2375, 17000), (2500, 16150), (2584, 15625), (3125, 12920), (3230, 12500), (3400, 11875), (3800, 10625), (4250, 9500), (4750, 8500), (5000, 8075), (6250, 6460)]