19316260

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{223}}^1$

素因数の和:364

約数の個数: 48

約数和(自身を含む): 41997312

約数和(自身を除く): 22681052

約数列:

[1, 2, 4, 5, 10, 20, 61, 71, 122, 142, 223, 244, 284, 305, 355, 446, 610, 710, 892, 1115, 1220, 1420, 2230, 4331, 4460, 8662, 13603, 15833, 17324, 21655, 27206, 31666, 43310, 54412, 63332, 68015, 79165, 86620, 136030, 158330, 272060, 316660, 965813, 1931626, 3863252, 4829065, 9658130, 19316260]

約数ペア:

[(1, 19316260), (2, 9658130), (4, 4829065), (5, 3863252), (10, 1931626), (20, 965813), (61, 316660), (71, 272060), (122, 158330), (142, 136030), (223, 86620), (244, 79165), (284, 68015), (305, 63332), (355, 54412), (446, 43310), (610, 31666), (710, 27206), (892, 21655), (1115, 17324), (1220, 15833), (1420, 13603), (2230, 8662), (4331, 4460)]