81700220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:267

約数の個数: 96

約数和(自身を含む): 203212800

約数和(自身を除く): 121512580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 79, 83, 89, 140, 158, 166, 178, 316, 332, 356, 395, 415, 445, 553, 581, 623, 790, 830, 890, 1106, 1162, 1246, 1580, 1660, 1780, 2212, 2324, 2492, 2765, 2905, 3115, 5530, 5810, 6230, 6557, 7031, 7387, 11060, 11620, 12460, 13114, 14062, 14774, 26228, 28124, 29548, 32785, 35155, 36935, 45899, 49217, 51709, 65570, 70310, 73870, 91798, 98434, 103418, 131140, 140620, 147740, 183596, 196868, 206836, 229495, 246085, 258545, 458990, 492170, 517090, 583573, 917980, 984340, 1034180, 1167146, 2334292, 2917865, 4085011, 5835730, 8170022, 11671460, 16340044, 20425055, 40850110, 81700220]

約数ペア:

[(1, 81700220), (2, 40850110), (4, 20425055), (5, 16340044), (7, 11671460), (10, 8170022), (14, 5835730), (20, 4085011), (28, 2917865), (35, 2334292), (70, 1167146), (79, 1034180), (83, 984340), (89, 917980), (140, 583573), (158, 517090), (166, 492170), (178, 458990), (316, 258545), (332, 246085), (356, 229495), (395, 206836), (415, 196868), (445, 183596), (553, 147740), (581, 140620), (623, 131140), (790, 103418), (830, 98434), (890, 91798), (1106, 73870), (1162, 70310), (1246, 65570), (1580, 51709), (1660, 49217), (1780, 45899), (2212, 36935), (2324, 35155), (2492, 32785), (2765, 29548), (2905, 28124), (3115, 26228), (5530, 14774), (5810, 14062), (6230, 13114), (6557, 12460), (7031, 11620), (7387, 11060)]