81949120

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{751}}^1$

素因数の和:810

約数の個数: 112

約数和(自身を含む): 220041216

約数和(自身を除く): 138092096

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 32, 40, 44, 55, 62, 64, 80, 88, 110, 124, 155, 160, 176, 220, 248, 310, 320, 341, 352, 440, 496, 620, 682, 704, 751, 880, 992, 1240, 1364, 1502, 1705, 1760, 1984, 2480, 2728, 3004, 3410, 3520, 3755, 4960, 5456, 6008, 6820, 7510, 8261, 9920, 10912, 12016, 13640, 15020, 16522, 21824, 23281, 24032, 27280, 30040, 33044, 41305, 46562, 48064, 54560, 60080, 66088, 82610, 93124, 109120, 116405, 120160, 132176, 165220, 186248, 232810, 240320, 256091, 264352, 330440, 372496, 465620, 512182, 528704, 660880, 744992, 931240, 1024364, 1280455, 1321760, 1489984, 1862480, 2048728, 2560910, 2643520, 3724960, 4097456, 5121820, 7449920, 8194912, 10243640, 16389824, 20487280, 40974560, 81949120]

約数ペア:

[(1, 81949120), (2, 40974560), (4, 20487280), (5, 16389824), (8, 10243640), (10, 8194912), (11, 7449920), (16, 5121820), (20, 4097456), (22, 3724960), (31, 2643520), (32, 2560910), (40, 2048728), (44, 1862480), (55, 1489984), (62, 1321760), (64, 1280455), (80, 1024364), (88, 931240), (110, 744992), (124, 660880), (155, 528704), (160, 512182), (176, 465620), (220, 372496), (248, 330440), (310, 264352), (320, 256091), (341, 240320), (352, 232810), (440, 186248), (496, 165220), (620, 132176), (682, 120160), (704, 116405), (751, 109120), (880, 93124), (992, 82610), (1240, 66088), (1364, 60080), (1502, 54560), (1705, 48064), (1760, 46562), (1984, 41305), (2480, 33044), (2728, 30040), (3004, 27280), (3410, 24032), (3520, 23281), (3755, 21824), (4960, 16522), (5456, 15020), (6008, 13640), (6820, 12016), (7510, 10912), (8261, 9920)]