20555480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:201

約数の個数: 96

約数和(自身を含む): 52859520

約数和(自身を除く): 32304040

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 121, 124, 137, 155, 220, 242, 248, 274, 310, 341, 440, 484, 548, 605, 620, 682, 685, 968, 1096, 1210, 1240, 1364, 1370, 1507, 1705, 2420, 2728, 2740, 3014, 3410, 3751, 4247, 4840, 5480, 6028, 6820, 7502, 7535, 8494, 12056, 13640, 15004, 15070, 16577, 16988, 18755, 21235, 30008, 30140, 33154, 33976, 37510, 42470, 46717, 60280, 66308, 75020, 82885, 84940, 93434, 132616, 150040, 165770, 169880, 186868, 233585, 331540, 373736, 467170, 513887, 663080, 934340, 1027774, 1868680, 2055548, 2569435, 4111096, 5138870, 10277740, 20555480]

約数ペア:

[(1, 20555480), (2, 10277740), (4, 5138870), (5, 4111096), (8, 2569435), (10, 2055548), (11, 1868680), (20, 1027774), (22, 934340), (31, 663080), (40, 513887), (44, 467170), (55, 373736), (62, 331540), (88, 233585), (110, 186868), (121, 169880), (124, 165770), (137, 150040), (155, 132616), (220, 93434), (242, 84940), (248, 82885), (274, 75020), (310, 66308), (341, 60280), (440, 46717), (484, 42470), (548, 37510), (605, 33976), (620, 33154), (682, 30140), (685, 30008), (968, 21235), (1096, 18755), (1210, 16988), (1240, 16577), (1364, 15070), (1370, 15004), (1507, 13640), (1705, 12056), (2420, 8494), (2728, 7535), (2740, 7502), (3014, 6820), (3410, 6028), (3751, 5480), (4247, 4840)]