21441290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:215

約数の個数: 64

約数和(自身を含む): 44416512

約数和(自身を除く): 22975222

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 65, 71, 101, 115, 130, 142, 202, 230, 299, 355, 505, 598, 710, 923, 1010, 1313, 1495, 1633, 1846, 2323, 2626, 2990, 3266, 4615, 4646, 6565, 7171, 8165, 9230, 11615, 13130, 14342, 16330, 21229, 23230, 30199, 35855, 42458, 60398, 71710, 93223, 106145, 150995, 164933, 186446, 212290, 301990, 329866, 466115, 824665, 932230, 1649330, 2144129, 4288258, 10720645, 21441290]

約数ペア:

[(1, 21441290), (2, 10720645), (5, 4288258), (10, 2144129), (13, 1649330), (23, 932230), (26, 824665), (46, 466115), (65, 329866), (71, 301990), (101, 212290), (115, 186446), (130, 164933), (142, 150995), (202, 106145), (230, 93223), (299, 71710), (355, 60398), (505, 42458), (598, 35855), (710, 30199), (923, 23230), (1010, 21229), (1313, 16330), (1495, 14342), (1633, 13130), (1846, 11615), (2323, 9230), (2626, 8165), (2990, 7171), (3266, 6565), (4615, 4646)]