2017991960

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{389}}^1\times {\mathrm{2447}}^1$

素因数の和:2900

約数の個数: 64

約数和(自身を含む): 4639939200

約数和(自身を除く): 2621947240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 389, 424, 530, 778, 1060, 1556, 1945, 2120, 2447, 3112, 3890, 4894, 7780, 9788, 12235, 15560, 19576, 20617, 24470, 41234, 48940, 82468, 97880, 103085, 129691, 164936, 206170, 259382, 412340, 518764, 648455, 824680, 951883, 1037528, 1296910, 1903766, 2593820, 3807532, 4759415, 5187640, 7615064, 9518830, 19037660, 38075320, 50449799, 100899598, 201799196, 252248995, 403598392, 504497990, 1008995980, 2017991960]

約数ペア:

[(1, 2017991960), (2, 1008995980), (4, 504497990), (5, 403598392), (8, 252248995), (10, 201799196), (20, 100899598), (40, 50449799), (53, 38075320), (106, 19037660), (212, 9518830), (265, 7615064), (389, 5187640), (424, 4759415), (530, 3807532), (778, 2593820), (1060, 1903766), (1556, 1296910), (1945, 1037528), (2120, 951883), (2447, 824680), (3112, 648455), (3890, 518764), (4894, 412340), (7780, 259382), (9788, 206170), (12235, 164936), (15560, 129691), (19576, 103085), (20617, 97880), (24470, 82468), (41234, 48940)]