20815320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1949}}^1$

素因数の和:2052

約数の個数: 64

約数和(自身を含む): 63180000

約数和(自身を除く): 42364680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 89, 120, 178, 267, 356, 445, 534, 712, 890, 1068, 1335, 1780, 1949, 2136, 2670, 3560, 3898, 5340, 5847, 7796, 9745, 10680, 11694, 15592, 19490, 23388, 29235, 38980, 46776, 58470, 77960, 116940, 173461, 233880, 346922, 520383, 693844, 867305, 1040766, 1387688, 1734610, 2081532, 2601915, 3469220, 4163064, 5203830, 6938440, 10407660, 20815320]

約数ペア:

[(1, 20815320), (2, 10407660), (3, 6938440), (4, 5203830), (5, 4163064), (6, 3469220), (8, 2601915), (10, 2081532), (12, 1734610), (15, 1387688), (20, 1040766), (24, 867305), (30, 693844), (40, 520383), (60, 346922), (89, 233880), (120, 173461), (178, 116940), (267, 77960), (356, 58470), (445, 46776), (534, 38980), (712, 29235), (890, 23388), (1068, 19490), (1335, 15592), (1780, 11694), (1949, 10680), (2136, 9745), (2670, 7796), (3560, 5847), (3898, 5340)]