81020142

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{389}}^1$

素因数の和:455

約数の個数: 128

約数和(自身を含む): 224640000

約数和(自身を除く): 143619858

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 19, 21, 27, 29, 38, 42, 54, 57, 58, 63, 87, 114, 126, 133, 171, 174, 189, 203, 261, 266, 342, 378, 389, 399, 406, 513, 522, 551, 609, 778, 783, 798, 1026, 1102, 1167, 1197, 1218, 1566, 1653, 1827, 2334, 2394, 2723, 3306, 3501, 3591, 3654, 3857, 4959, 5446, 5481, 7002, 7182, 7391, 7714, 8169, 9918, 10503, 10962, 11281, 11571, 14782, 14877, 16338, 21006, 22173, 22562, 23142, 24507, 29754, 33843, 34713, 44346, 49014, 51737, 66519, 67686, 69426, 73521, 78967, 101529, 103474, 104139, 133038, 147042, 155211, 157934, 199557, 203058, 208278, 214339, 236901, 304587, 310422, 399114, 428678, 465633, 473802, 609174, 643017, 710703, 931266, 1286034, 1396899, 1421406, 1500373, 1929051, 2132109, 2793798, 3000746, 3858102, 4264218, 4501119, 5787153, 9002238, 11574306, 13503357, 27006714, 40510071, 81020142]

約数ペア:

[(1, 81020142), (2, 40510071), (3, 27006714), (6, 13503357), (7, 11574306), (9, 9002238), (14, 5787153), (18, 4501119), (19, 4264218), (21, 3858102), (27, 3000746), (29, 2793798), (38, 2132109), (42, 1929051), (54, 1500373), (57, 1421406), (58, 1396899), (63, 1286034), (87, 931266), (114, 710703), (126, 643017), (133, 609174), (171, 473802), (174, 465633), (189, 428678), (203, 399114), (261, 310422), (266, 304587), (342, 236901), (378, 214339), (389, 208278), (399, 203058), (406, 199557), (513, 157934), (522, 155211), (551, 147042), (609, 133038), (778, 104139), (783, 103474), (798, 101529), (1026, 78967), (1102, 73521), (1167, 69426), (1197, 67686), (1218, 66519), (1566, 51737), (1653, 49014), (1827, 44346), (2334, 34713), (2394, 33843), (2723, 29754), (3306, 24507), (3501, 23142), (3591, 22562), (3654, 22173), (3857, 21006), (4959, 16338), (5446, 14877), (5481, 14782), (7002, 11571), (7182, 11281), (7391, 10962), (7714, 10503), (8169, 9918)]