20349850

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{269}}^1$

素因数の和:387

約数の個数: 48

約数和(自身を含む): 40678200

約数和(自身を除く): 20328350

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 89, 170, 178, 269, 425, 445, 538, 850, 890, 1345, 1513, 2225, 2690, 3026, 4450, 4573, 6725, 7565, 9146, 13450, 15130, 22865, 23941, 37825, 45730, 47882, 75650, 114325, 119705, 228650, 239410, 406997, 598525, 813994, 1197050, 2034985, 4069970, 10174925, 20349850]

約数ペア:

[(1, 20349850), (2, 10174925), (5, 4069970), (10, 2034985), (17, 1197050), (25, 813994), (34, 598525), (50, 406997), (85, 239410), (89, 228650), (170, 119705), (178, 114325), (269, 75650), (425, 47882), (445, 45730), (538, 37825), (850, 23941), (890, 22865), (1345, 15130), (1513, 13450), (2225, 9146), (2690, 7565), (3026, 6725), (4450, 4573)]