28556220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{883}}^1$

素因数の和:920

約数の個数: 144

約数和(自身を含む): 101582208

約数和(自身を除く): 73025988

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 44, 49, 55, 60, 66, 70, 77, 84, 98, 105, 110, 132, 140, 147, 154, 165, 196, 210, 220, 231, 245, 294, 308, 330, 385, 420, 462, 490, 539, 588, 660, 735, 770, 883, 924, 980, 1078, 1155, 1470, 1540, 1617, 1766, 2156, 2310, 2649, 2695, 2940, 3234, 3532, 4415, 4620, 5298, 5390, 6181, 6468, 8085, 8830, 9713, 10596, 10780, 12362, 13245, 16170, 17660, 18543, 19426, 24724, 26490, 29139, 30905, 32340, 37086, 38852, 43267, 48565, 52980, 58278, 61810, 67991, 74172, 86534, 92715, 97130, 116556, 123620, 129801, 135982, 145695, 173068, 185430, 194260, 203973, 216335, 259602, 271964, 291390, 339955, 370860, 407946, 432670, 475937, 519204, 582780, 649005, 679910, 815892, 865340, 951874, 1019865, 1298010, 1359820, 1427811, 1903748, 2039730, 2379685, 2596020, 2855622, 4079460, 4759370, 5711244, 7139055, 9518740, 14278110, 28556220]

約数ペア:

[(1, 28556220), (2, 14278110), (3, 9518740), (4, 7139055), (5, 5711244), (6, 4759370), (7, 4079460), (10, 2855622), (11, 2596020), (12, 2379685), (14, 2039730), (15, 1903748), (20, 1427811), (21, 1359820), (22, 1298010), (28, 1019865), (30, 951874), (33, 865340), (35, 815892), (42, 679910), (44, 649005), (49, 582780), (55, 519204), (60, 475937), (66, 432670), (70, 407946), (77, 370860), (84, 339955), (98, 291390), (105, 271964), (110, 259602), (132, 216335), (140, 203973), (147, 194260), (154, 185430), (165, 173068), (196, 145695), (210, 135982), (220, 129801), (231, 123620), (245, 116556), (294, 97130), (308, 92715), (330, 86534), (385, 74172), (420, 67991), (462, 61810), (490, 58278), (539, 52980), (588, 48565), (660, 43267), (735, 38852), (770, 37086), (883, 32340), (924, 30905), (980, 29139), (1078, 26490), (1155, 24724), (1470, 19426), (1540, 18543), (1617, 17660), (1766, 16170), (2156, 13245), (2310, 12362), (2649, 10780), (2695, 10596), (2940, 9713), (3234, 8830), (3532, 8085), (4415, 6468), (4620, 6181), (5298, 5390)]