211475720

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{3323}}^1$

素因数の和:3414

約数の個数: 64

約数和(自身を含む): 500195520

約数和(自身を除く): 288719800

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 43, 74, 86, 148, 172, 185, 215, 296, 344, 370, 430, 740, 860, 1480, 1591, 1720, 3182, 3323, 6364, 6646, 7955, 12728, 13292, 15910, 16615, 26584, 31820, 33230, 63640, 66460, 122951, 132920, 142889, 245902, 285778, 491804, 571556, 614755, 714445, 983608, 1143112, 1229510, 1428890, 2459020, 2857780, 4918040, 5286893, 5715560, 10573786, 21147572, 26434465, 42295144, 52868930, 105737860, 211475720]

約数ペア:

[(1, 211475720), (2, 105737860), (4, 52868930), (5, 42295144), (8, 26434465), (10, 21147572), (20, 10573786), (37, 5715560), (40, 5286893), (43, 4918040), (74, 2857780), (86, 2459020), (148, 1428890), (172, 1229510), (185, 1143112), (215, 983608), (296, 714445), (344, 614755), (370, 571556), (430, 491804), (740, 285778), (860, 245902), (1480, 142889), (1591, 132920), (1720, 122951), (3182, 66460), (3323, 63640), (6364, 33230), (6646, 31820), (7955, 26584), (12728, 16615), (13292, 15910)]