81557460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:254

約数の個数: 144

約数和(自身を含む): 257572224

約数和(自身を除く): 176014764

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 53, 60, 83, 90, 103, 106, 159, 166, 180, 206, 212, 249, 265, 309, 318, 332, 412, 415, 477, 498, 515, 530, 618, 636, 747, 795, 830, 927, 954, 996, 1030, 1060, 1236, 1245, 1494, 1545, 1590, 1660, 1854, 1908, 2060, 2385, 2490, 2988, 3090, 3180, 3708, 3735, 4399, 4635, 4770, 4980, 5459, 6180, 7470, 8549, 8798, 9270, 9540, 10918, 13197, 14940, 16377, 17098, 17596, 18540, 21836, 21995, 25647, 26394, 27295, 32754, 34196, 39591, 42745, 43990, 49131, 51294, 52788, 54590, 65508, 65985, 76941, 79182, 81885, 85490, 87980, 98262, 102588, 109180, 128235, 131970, 153882, 158364, 163770, 170980, 196524, 197955, 245655, 256470, 263940, 307764, 327540, 384705, 395910, 453097, 491310, 512940, 769410, 791820, 906194, 982620, 1359291, 1538820, 1812388, 2265485, 2718582, 4077873, 4530970, 5437164, 6796455, 8155746, 9061940, 13592910, 16311492, 20389365, 27185820, 40778730, 81557460]

約数ペア:

[(1, 81557460), (2, 40778730), (3, 27185820), (4, 20389365), (5, 16311492), (6, 13592910), (9, 9061940), (10, 8155746), (12, 6796455), (15, 5437164), (18, 4530970), (20, 4077873), (30, 2718582), (36, 2265485), (45, 1812388), (53, 1538820), (60, 1359291), (83, 982620), (90, 906194), (103, 791820), (106, 769410), (159, 512940), (166, 491310), (180, 453097), (206, 395910), (212, 384705), (249, 327540), (265, 307764), (309, 263940), (318, 256470), (332, 245655), (412, 197955), (415, 196524), (477, 170980), (498, 163770), (515, 158364), (530, 153882), (618, 131970), (636, 128235), (747, 109180), (795, 102588), (830, 98262), (927, 87980), (954, 85490), (996, 81885), (1030, 79182), (1060, 76941), (1236, 65985), (1245, 65508), (1494, 54590), (1545, 52788), (1590, 51294), (1660, 49131), (1854, 43990), (1908, 42745), (2060, 39591), (2385, 34196), (2490, 32754), (2988, 27295), (3090, 26394), (3180, 25647), (3708, 21995), (3735, 21836), (4399, 18540), (4635, 17596), (4770, 17098), (4980, 16377), (5459, 14940), (6180, 13197), (7470, 10918), (8549, 9540), (8798, 9270)]