20618620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1$

素因数の和:223

約数の個数: 96

約数和(自身を含む): 51710400

約数和(自身を除く): 31091780

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 37, 44, 55, 68, 74, 85, 110, 148, 149, 170, 185, 187, 220, 298, 340, 370, 374, 407, 596, 629, 740, 745, 748, 814, 935, 1258, 1490, 1628, 1639, 1870, 2035, 2516, 2533, 2980, 3145, 3278, 3740, 4070, 5066, 5513, 6290, 6556, 6919, 8140, 8195, 10132, 11026, 12580, 12665, 13838, 16390, 22052, 25330, 27565, 27676, 27863, 32780, 34595, 50660, 55130, 55726, 60643, 69190, 93721, 110260, 111452, 121286, 138380, 139315, 187442, 242572, 278630, 303215, 374884, 468605, 557260, 606430, 937210, 1030931, 1212860, 1874420, 2061862, 4123724, 5154655, 10309310, 20618620]

約数ペア:

[(1, 20618620), (2, 10309310), (4, 5154655), (5, 4123724), (10, 2061862), (11, 1874420), (17, 1212860), (20, 1030931), (22, 937210), (34, 606430), (37, 557260), (44, 468605), (55, 374884), (68, 303215), (74, 278630), (85, 242572), (110, 187442), (148, 139315), (149, 138380), (170, 121286), (185, 111452), (187, 110260), (220, 93721), (298, 69190), (340, 60643), (370, 55726), (374, 55130), (407, 50660), (596, 34595), (629, 32780), (740, 27863), (745, 27676), (748, 27565), (814, 25330), (935, 22052), (1258, 16390), (1490, 13838), (1628, 12665), (1639, 12580), (1870, 11026), (2035, 10132), (2516, 8195), (2533, 8140), (2980, 6919), (3145, 6556), (3278, 6290), (3740, 5513), (4070, 5066)]