21003960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1733}}^1$

素因数の和:1848

約数の個数: 64

約数和(自身を含む): 63672480

約数和(自身を除く): 42668520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 101, 120, 202, 303, 404, 505, 606, 808, 1010, 1212, 1515, 1733, 2020, 2424, 3030, 3466, 4040, 5199, 6060, 6932, 8665, 10398, 12120, 13864, 17330, 20796, 25995, 34660, 41592, 51990, 69320, 103980, 175033, 207960, 350066, 525099, 700132, 875165, 1050198, 1400264, 1750330, 2100396, 2625495, 3500660, 4200792, 5250990, 7001320, 10501980, 21003960]

約数ペア:

[(1, 21003960), (2, 10501980), (3, 7001320), (4, 5250990), (5, 4200792), (6, 3500660), (8, 2625495), (10, 2100396), (12, 1750330), (15, 1400264), (20, 1050198), (24, 875165), (30, 700132), (40, 525099), (60, 350066), (101, 207960), (120, 175033), (202, 103980), (303, 69320), (404, 51990), (505, 41592), (606, 34660), (808, 25995), (1010, 20796), (1212, 17330), (1515, 13864), (1733, 12120), (2020, 10398), (2424, 8665), (3030, 6932), (3466, 6060), (4040, 5199)]