258400

素因数分解:

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

素因数の和:56

約数の個数: 72

約数和(自身を含む): 703080

約数和(自身を除く): 444680

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 25, 32, 34, 38, 40, 50, 68, 76, 80, 85, 95, 100, 136, 152, 160, 170, 190, 200, 272, 304, 323, 340, 380, 400, 425, 475, 544, 608, 646, 680, 760, 800, 850, 950, 1292, 1360, 1520, 1615, 1700, 1900, 2584, 2720, 3040, 3230, 3400, 3800, 5168, 6460, 6800, 7600, 8075, 10336, 12920, 13600, 15200, 16150, 25840, 32300, 51680, 64600, 129200, 258400]

約数ペア:

[(1, 258400), (2, 129200), (4, 64600), (5, 51680), (8, 32300), (10, 25840), (16, 16150), (17, 15200), (19, 13600), (20, 12920), (25, 10336), (32, 8075), (34, 7600), (38, 6800), (40, 6460), (50, 5168), (68, 3800), (76, 3400), (80, 3230), (85, 3040), (95, 2720), (100, 2584), (136, 1900), (152, 1700), (160, 1615), (170, 1520), (190, 1360), (200, 1292), (272, 950), (304, 850), (323, 800), (340, 760), (380, 680), (400, 646), (425, 608), (475, 544)]