19378260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{9787}}^1$

素因数の和:9813

約数の個数: 72

約数和(自身を含む): 64130976

約数和(自身を除く): 44752716

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 9787, 19574, 29361, 39148, 48935, 58722, 88083, 97870, 107657, 117444, 146805, 176166, 195740, 215314, 293610, 322971, 352332, 430628, 440415, 538285, 587220, 645942, 880830, 968913, 1076570, 1291884, 1614855, 1761660, 1937826, 2153140, 3229710, 3875652, 4844565, 6459420, 9689130, 19378260]

約数ペア:

[(1, 19378260), (2, 9689130), (3, 6459420), (4, 4844565), (5, 3875652), (6, 3229710), (9, 2153140), (10, 1937826), (11, 1761660), (12, 1614855), (15, 1291884), (18, 1076570), (20, 968913), (22, 880830), (30, 645942), (33, 587220), (36, 538285), (44, 440415), (45, 430628), (55, 352332), (60, 322971), (66, 293610), (90, 215314), (99, 195740), (110, 176166), (132, 146805), (165, 117444), (180, 107657), (198, 97870), (220, 88083), (330, 58722), (396, 48935), (495, 39148), (660, 29361), (990, 19574), (1980, 9787)]