21995460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1373}}^1$

素因数の和:1477

約数の個数: 72

約数和(自身を含む): 67518360

約数和(自身を除く): 45522900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 89, 90, 178, 180, 267, 356, 445, 534, 801, 890, 1068, 1335, 1373, 1602, 1780, 2670, 2746, 3204, 4005, 4119, 5340, 5492, 6865, 8010, 8238, 12357, 13730, 16020, 16476, 20595, 24714, 27460, 41190, 49428, 61785, 82380, 122197, 123570, 244394, 247140, 366591, 488788, 610985, 733182, 1099773, 1221970, 1466364, 1832955, 2199546, 2443940, 3665910, 4399092, 5498865, 7331820, 10997730, 21995460]

約数ペア:

[(1, 21995460), (2, 10997730), (3, 7331820), (4, 5498865), (5, 4399092), (6, 3665910), (9, 2443940), (10, 2199546), (12, 1832955), (15, 1466364), (18, 1221970), (20, 1099773), (30, 733182), (36, 610985), (45, 488788), (60, 366591), (89, 247140), (90, 244394), (178, 123570), (180, 122197), (267, 82380), (356, 61785), (445, 49428), (534, 41190), (801, 27460), (890, 24714), (1068, 20595), (1335, 16476), (1373, 16020), (1602, 13730), (1780, 12357), (2670, 8238), (2746, 8010), (3204, 6865), (4005, 5492), (4119, 5340)]