1640984840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{2777}}^1$

素因数の和:2895

約数の個数: 128

約数和(自身を含む): 4320345600

約数和(自身を除く): 2679360760

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 79, 85, 88, 110, 136, 158, 170, 187, 220, 316, 340, 374, 395, 440, 632, 680, 748, 790, 869, 935, 1343, 1496, 1580, 1738, 1870, 2686, 2777, 3160, 3476, 3740, 4345, 5372, 5554, 6715, 6952, 7480, 8690, 10744, 11108, 13430, 13885, 14773, 17380, 22216, 26860, 27770, 29546, 30547, 34760, 47209, 53720, 55540, 59092, 61094, 73865, 94418, 111080, 118184, 122188, 147730, 152735, 188836, 219383, 236045, 244376, 295460, 305470, 377672, 438766, 472090, 519299, 590920, 610940, 877532, 944180, 1038598, 1096915, 1221880, 1755064, 1888360, 2077196, 2193830, 2413213, 2596495, 3729511, 4154392, 4387660, 4826426, 5192990, 7459022, 8775320, 9652852, 10385980, 12066065, 14918044, 18647555, 19305704, 20771960, 24132130, 29836088, 37295110, 41024621, 48264260, 74590220, 82049242, 96528520, 149180440, 164098484, 205123105, 328196968, 410246210, 820492420, 1640984840]

約数ペア:

[(1, 1640984840), (2, 820492420), (4, 410246210), (5, 328196968), (8, 205123105), (10, 164098484), (11, 149180440), (17, 96528520), (20, 82049242), (22, 74590220), (34, 48264260), (40, 41024621), (44, 37295110), (55, 29836088), (68, 24132130), (79, 20771960), (85, 19305704), (88, 18647555), (110, 14918044), (136, 12066065), (158, 10385980), (170, 9652852), (187, 8775320), (220, 7459022), (316, 5192990), (340, 4826426), (374, 4387660), (395, 4154392), (440, 3729511), (632, 2596495), (680, 2413213), (748, 2193830), (790, 2077196), (869, 1888360), (935, 1755064), (1343, 1221880), (1496, 1096915), (1580, 1038598), (1738, 944180), (1870, 877532), (2686, 610940), (2777, 590920), (3160, 519299), (3476, 472090), (3740, 438766), (4345, 377672), (5372, 305470), (5554, 295460), (6715, 244376), (6952, 236045), (7480, 219383), (8690, 188836), (10744, 152735), (11108, 147730), (13430, 122188), (13885, 118184), (14773, 111080), (17380, 94418), (22216, 73865), (26860, 61094), (27770, 59092), (29546, 55540), (30547, 53720), (34760, 47209)]