221000

素因数分解:

$2^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1$

素因数の和:51

約数の個数: 64

約数和(自身を含む): 589680

約数和(自身を除く): 368680

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 25, 26, 34, 40, 50, 52, 65, 68, 85, 100, 104, 125, 130, 136, 170, 200, 221, 250, 260, 325, 340, 425, 442, 500, 520, 650, 680, 850, 884, 1000, 1105, 1300, 1625, 1700, 1768, 2125, 2210, 2600, 3250, 3400, 4250, 4420, 5525, 6500, 8500, 8840, 11050, 13000, 17000, 22100, 27625, 44200, 55250, 110500, 221000]

約数ペア:

[(1, 221000), (2, 110500), (4, 55250), (5, 44200), (8, 27625), (10, 22100), (13, 17000), (17, 13000), (20, 11050), (25, 8840), (26, 8500), (34, 6500), (40, 5525), (50, 4420), (52, 4250), (65, 3400), (68, 3250), (85, 2600), (100, 2210), (104, 2125), (125, 1768), (130, 1700), (136, 1625), (170, 1300), (200, 1105), (221, 1000), (250, 884), (260, 850), (325, 680), (340, 650), (425, 520), (442, 500)]