161998408

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{257}}^1$

素因数の和:335

約数の個数: 128

約数和(自身を含む): 390096000

約数和(自身を除く): 228097592

約数列:

[1, 2, 4, 8, 11, 13, 19, 22, 26, 29, 38, 44, 52, 58, 76, 88, 104, 116, 143, 152, 209, 232, 247, 257, 286, 319, 377, 418, 494, 514, 551, 572, 638, 754, 836, 988, 1028, 1102, 1144, 1276, 1508, 1672, 1976, 2056, 2204, 2552, 2717, 2827, 3016, 3341, 4147, 4408, 4883, 5434, 5654, 6061, 6682, 7163, 7453, 8294, 9766, 10868, 11308, 12122, 13364, 14326, 14906, 16588, 19532, 21736, 22616, 24244, 26728, 28652, 29812, 33176, 36751, 39064, 48488, 53713, 57304, 59624, 63479, 73502, 78793, 81983, 96889, 107426, 126958, 141607, 147004, 157586, 163966, 193778, 214852, 253916, 283214, 294008, 315172, 327932, 387556, 429704, 507832, 566428, 630344, 655864, 698269, 775112, 1065779, 1132856, 1396538, 1557677, 1840891, 2131558, 2793076, 3115354, 3681782, 4263116, 5586152, 6230708, 7363564, 8526232, 12461416, 14727128, 20249801, 40499602, 80999204, 161998408]

約数ペア:

[(1, 161998408), (2, 80999204), (4, 40499602), (8, 20249801), (11, 14727128), (13, 12461416), (19, 8526232), (22, 7363564), (26, 6230708), (29, 5586152), (38, 4263116), (44, 3681782), (52, 3115354), (58, 2793076), (76, 2131558), (88, 1840891), (104, 1557677), (116, 1396538), (143, 1132856), (152, 1065779), (209, 775112), (232, 698269), (247, 655864), (257, 630344), (286, 566428), (319, 507832), (377, 429704), (418, 387556), (494, 327932), (514, 315172), (551, 294008), (572, 283214), (638, 253916), (754, 214852), (836, 193778), (988, 163966), (1028, 157586), (1102, 147004), (1144, 141607), (1276, 126958), (1508, 107426), (1672, 96889), (1976, 81983), (2056, 78793), (2204, 73502), (2552, 63479), (2717, 59624), (2827, 57304), (3016, 53713), (3341, 48488), (4147, 39064), (4408, 36751), (4883, 33176), (5434, 29812), (5654, 28652), (6061, 26728), (6682, 24244), (7163, 22616), (7453, 21736), (8294, 19532), (9766, 16588), (10868, 14906), (11308, 14326), (12122, 13364)]