2017799990

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{78179}}^1$

素因数の和:78304

約数の個数: 32

約数和(自身を含む): 3799548000

約数和(自身を除く): 1781748010

約数列:

[1, 2, 5, 10, 29, 58, 89, 145, 178, 290, 445, 890, 2581, 5162, 12905, 25810, 78179, 156358, 390895, 781790, 2267191, 4534382, 6957931, 11335955, 13915862, 22671910, 34789655, 69579310, 201779999, 403559998, 1008899995, 2017799990]

約数ペア:

[(1, 2017799990), (2, 1008899995), (5, 403559998), (10, 201779999), (29, 69579310), (58, 34789655), (89, 22671910), (145, 13915862), (178, 11335955), (290, 6957931), (445, 4534382), (890, 2267191), (2581, 781790), (5162, 390895), (12905, 156358), (25810, 78179)]