20777820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{811}}^1$

素因数の和:891

約数の個数: 96

約数和(自身を含む): 67662336

約数和(自身を除く): 46884516

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 61, 70, 84, 105, 122, 140, 183, 210, 244, 305, 366, 420, 427, 610, 732, 811, 854, 915, 1220, 1281, 1622, 1708, 1830, 2135, 2433, 2562, 3244, 3660, 4055, 4270, 4866, 5124, 5677, 6405, 8110, 8540, 9732, 11354, 12165, 12810, 16220, 17031, 22708, 24330, 25620, 28385, 34062, 48660, 49471, 56770, 68124, 85155, 98942, 113540, 148413, 170310, 197884, 247355, 296826, 340620, 346297, 494710, 593652, 692594, 742065, 989420, 1038891, 1385188, 1484130, 1731485, 2077782, 2968260, 3462970, 4155564, 5194455, 6925940, 10388910, 20777820]

約数ペア:

[(1, 20777820), (2, 10388910), (3, 6925940), (4, 5194455), (5, 4155564), (6, 3462970), (7, 2968260), (10, 2077782), (12, 1731485), (14, 1484130), (15, 1385188), (20, 1038891), (21, 989420), (28, 742065), (30, 692594), (35, 593652), (42, 494710), (60, 346297), (61, 340620), (70, 296826), (84, 247355), (105, 197884), (122, 170310), (140, 148413), (183, 113540), (210, 98942), (244, 85155), (305, 68124), (366, 56770), (420, 49471), (427, 48660), (610, 34062), (732, 28385), (811, 25620), (854, 24330), (915, 22708), (1220, 17031), (1281, 16220), (1622, 12810), (1708, 12165), (1830, 11354), (2135, 9732), (2433, 8540), (2562, 8110), (3244, 6405), (3660, 5677), (4055, 5124), (4270, 4866)]