21396540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1907}}^1$

素因数の和:1947

約数の個数: 96

約数和(自身を含む): 69237504

約数和(自身を除く): 47840964

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 17, 20, 22, 30, 33, 34, 44, 51, 55, 60, 66, 68, 85, 102, 110, 132, 165, 170, 187, 204, 220, 255, 330, 340, 374, 510, 561, 660, 748, 935, 1020, 1122, 1870, 1907, 2244, 2805, 3740, 3814, 5610, 5721, 7628, 9535, 11220, 11442, 19070, 20977, 22884, 28605, 32419, 38140, 41954, 57210, 62931, 64838, 83908, 97257, 104885, 114420, 125862, 129676, 162095, 194514, 209770, 251724, 314655, 324190, 356609, 389028, 419540, 486285, 629310, 648380, 713218, 972570, 1069827, 1258620, 1426436, 1783045, 1945140, 2139654, 3566090, 4279308, 5349135, 7132180, 10698270, 21396540]

約数ペア:

[(1, 21396540), (2, 10698270), (3, 7132180), (4, 5349135), (5, 4279308), (6, 3566090), (10, 2139654), (11, 1945140), (12, 1783045), (15, 1426436), (17, 1258620), (20, 1069827), (22, 972570), (30, 713218), (33, 648380), (34, 629310), (44, 486285), (51, 419540), (55, 389028), (60, 356609), (66, 324190), (68, 314655), (85, 251724), (102, 209770), (110, 194514), (132, 162095), (165, 129676), (170, 125862), (187, 114420), (204, 104885), (220, 97257), (255, 83908), (330, 64838), (340, 62931), (374, 57210), (510, 41954), (561, 38140), (660, 32419), (748, 28605), (935, 22884), (1020, 20977), (1122, 19070), (1870, 11442), (1907, 11220), (2244, 9535), (2805, 7628), (3740, 5721), (3814, 5610)]