21583395

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1$

素因数の和:229

約数の個数: 64

約数和(自身を含む): 41040000

約数和(自身を除く): 19456605

約数列:

[1, 3, 5, 9, 15, 27, 29, 37, 45, 87, 111, 135, 145, 149, 185, 261, 333, 435, 447, 555, 745, 783, 999, 1073, 1305, 1341, 1665, 2235, 3219, 3915, 4023, 4321, 4995, 5365, 5513, 6705, 9657, 12963, 16095, 16539, 20115, 21605, 27565, 28971, 38889, 48285, 49617, 64815, 82695, 116667, 144855, 148851, 159877, 194445, 248085, 479631, 583335, 744255, 799385, 1438893, 2398155, 4316679, 7194465, 21583395]

約数ペア:

[(1, 21583395), (3, 7194465), (5, 4316679), (9, 2398155), (15, 1438893), (27, 799385), (29, 744255), (37, 583335), (45, 479631), (87, 248085), (111, 194445), (135, 159877), (145, 148851), (149, 144855), (185, 116667), (261, 82695), (333, 64815), (435, 49617), (447, 48285), (555, 38889), (745, 28971), (783, 27565), (999, 21605), (1073, 20115), (1305, 16539), (1341, 16095), (1665, 12963), (2235, 9657), (3219, 6705), (3915, 5513), (4023, 5365), (4321, 4995)]