81649232

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:149

約数の個数: 160

約数和(自身を含む): 210343680

約数和(自身を除く): 128694448

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 19, 28, 34, 37, 38, 56, 61, 68, 74, 76, 112, 119, 122, 133, 136, 148, 152, 238, 244, 259, 266, 272, 296, 304, 323, 427, 476, 488, 518, 532, 592, 629, 646, 703, 854, 952, 976, 1036, 1037, 1064, 1159, 1258, 1292, 1406, 1708, 1904, 2072, 2074, 2128, 2257, 2261, 2318, 2516, 2584, 2812, 3416, 4144, 4148, 4403, 4514, 4522, 4636, 4921, 5032, 5168, 5624, 6832, 7259, 8113, 8296, 8806, 9028, 9044, 9272, 9842, 10064, 11248, 11951, 14518, 15799, 16226, 16592, 17612, 18056, 18088, 18544, 19684, 19703, 23902, 29036, 31598, 32452, 35224, 36112, 36176, 38369, 39368, 39406, 42883, 47804, 58072, 63196, 64904, 70448, 76738, 78736, 78812, 83657, 85766, 95608, 116144, 126392, 129808, 137921, 153476, 157624, 167314, 171532, 191216, 252784, 268583, 275842, 300181, 306952, 315248, 334628, 343064, 537166, 551684, 600362, 613904, 669256, 686128, 729011, 1074332, 1103368, 1200724, 1338512, 1458022, 2148664, 2206736, 2401448, 2916044, 4297328, 4802896, 5103077, 5832088, 10206154, 11664176, 20412308, 40824616, 81649232]

約数ペア:

[(1, 81649232), (2, 40824616), (4, 20412308), (7, 11664176), (8, 10206154), (14, 5832088), (16, 5103077), (17, 4802896), (19, 4297328), (28, 2916044), (34, 2401448), (37, 2206736), (38, 2148664), (56, 1458022), (61, 1338512), (68, 1200724), (74, 1103368), (76, 1074332), (112, 729011), (119, 686128), (122, 669256), (133, 613904), (136, 600362), (148, 551684), (152, 537166), (238, 343064), (244, 334628), (259, 315248), (266, 306952), (272, 300181), (296, 275842), (304, 268583), (323, 252784), (427, 191216), (476, 171532), (488, 167314), (518, 157624), (532, 153476), (592, 137921), (629, 129808), (646, 126392), (703, 116144), (854, 95608), (952, 85766), (976, 83657), (1036, 78812), (1037, 78736), (1064, 76738), (1159, 70448), (1258, 64904), (1292, 63196), (1406, 58072), (1708, 47804), (1904, 42883), (2072, 39406), (2074, 39368), (2128, 38369), (2257, 36176), (2261, 36112), (2318, 35224), (2516, 32452), (2584, 31598), (2812, 29036), (3416, 23902), (4144, 19703), (4148, 19684), (4403, 18544), (4514, 18088), (4522, 18056), (4636, 17612), (4921, 16592), (5032, 16226), (5168, 15799), (5624, 14518), (6832, 11951), (7259, 11248), (8113, 10064), (8296, 9842), (8806, 9272), (9028, 9044)]