21000398520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{10294313}}^1$

素因数の和:10294344

約数の個数: 64

約数和(自身を含む): 66707154720

約数和(自身を除く): 45706756200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 340, 408, 510, 680, 1020, 2040, 10294313, 20588626, 30882939, 41177252, 51471565, 61765878, 82354504, 102943130, 123531756, 154414695, 175003321, 205886260, 247063512, 308829390, 350006642, 411772520, 525009963, 617658780, 700013284, 875016605, 1050019926, 1235317560, 1400026568, 1750033210, 2100039852, 2625049815, 3500066420, 4200079704, 5250099630, 7000132840, 10500199260, 21000398520]

約数ペア:

[(1, 21000398520), (2, 10500199260), (3, 7000132840), (4, 5250099630), (5, 4200079704), (6, 3500066420), (8, 2625049815), (10, 2100039852), (12, 1750033210), (15, 1400026568), (17, 1235317560), (20, 1050019926), (24, 875016605), (30, 700013284), (34, 617658780), (40, 525009963), (51, 411772520), (60, 350006642), (68, 308829390), (85, 247063512), (102, 205886260), (120, 175003321), (136, 154414695), (170, 123531756), (204, 102943130), (255, 82354504), (340, 61765878), (408, 51471565), (510, 41177252), (680, 30882939), (1020, 20588626), (2040, 10294313)]