21000852400

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{1871}}^1\times {\mathrm{2551}}^1$

素因数の和:4451

約数の個数: 120

約数和(自身を含む): 55092331008

約数和(自身を除く): 34091478608

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 176, 200, 220, 275, 400, 440, 550, 880, 1100, 1871, 2200, 2551, 3742, 4400, 5102, 7484, 9355, 10204, 12755, 14968, 18710, 20408, 20581, 25510, 28061, 29936, 37420, 40816, 41162, 46775, 51020, 56122, 63775, 74840, 82324, 93550, 102040, 102905, 112244, 127550, 140305, 149680, 164648, 187100, 204080, 205810, 224488, 255100, 280610, 329296, 374200, 411620, 448976, 510200, 514525, 561220, 701525, 748400, 823240, 1020400, 1029050, 1122440, 1403050, 1646480, 2058100, 2244880, 2806100, 4116200, 4772921, 5612200, 8232400, 9545842, 11224400, 19091684, 23864605, 38183368, 47729210, 52502131, 76366736, 95458420, 105004262, 119323025, 190916840, 210008524, 238646050, 262510655, 381833680, 420017048, 477292100, 525021310, 840034096, 954584200, 1050042620, 1312553275, 1909168400, 2100085240, 2625106550, 4200170480, 5250213100, 10500426200, 21000852400]

約数ペア:

[(1, 21000852400), (2, 10500426200), (4, 5250213100), (5, 4200170480), (8, 2625106550), (10, 2100085240), (11, 1909168400), (16, 1312553275), (20, 1050042620), (22, 954584200), (25, 840034096), (40, 525021310), (44, 477292100), (50, 420017048), (55, 381833680), (80, 262510655), (88, 238646050), (100, 210008524), (110, 190916840), (176, 119323025), (200, 105004262), (220, 95458420), (275, 76366736), (400, 52502131), (440, 47729210), (550, 38183368), (880, 23864605), (1100, 19091684), (1871, 11224400), (2200, 9545842), (2551, 8232400), (3742, 5612200), (4400, 4772921), (5102, 4116200), (7484, 2806100), (9355, 2244880), (10204, 2058100), (12755, 1646480), (14968, 1403050), (18710, 1122440), (20408, 1029050), (20581, 1020400), (25510, 823240), (28061, 748400), (29936, 701525), (37420, 561220), (40816, 514525), (41162, 510200), (46775, 448976), (51020, 411620), (56122, 374200), (63775, 329296), (74840, 280610), (82324, 255100), (93550, 224488), (102040, 205810), (102905, 204080), (112244, 187100), (127550, 164648), (140305, 149680)]