81241680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2003}}^1$

素因数の和:2045

約数の個数: 120

約数和(自身を含む): 272848608

約数和(自身を除く): 191606928

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 169, 195, 208, 240, 260, 312, 338, 390, 507, 520, 624, 676, 780, 845, 1014, 1040, 1352, 1560, 1690, 2003, 2028, 2535, 2704, 3120, 3380, 4006, 4056, 5070, 6009, 6760, 8012, 8112, 10015, 10140, 12018, 13520, 16024, 20030, 20280, 24036, 26039, 30045, 32048, 40060, 40560, 48072, 52078, 60090, 78117, 80120, 96144, 104156, 120180, 130195, 156234, 160240, 208312, 240360, 260390, 312468, 338507, 390585, 416624, 480720, 520780, 624936, 677014, 781170, 1015521, 1041560, 1249872, 1354028, 1562340, 1692535, 2031042, 2083120, 2708056, 3124680, 3385070, 4062084, 5077605, 5416112, 6249360, 6770140, 8124168, 10155210, 13540280, 16248336, 20310420, 27080560, 40620840, 81241680]

約数ペア:

[(1, 81241680), (2, 40620840), (3, 27080560), (4, 20310420), (5, 16248336), (6, 13540280), (8, 10155210), (10, 8124168), (12, 6770140), (13, 6249360), (15, 5416112), (16, 5077605), (20, 4062084), (24, 3385070), (26, 3124680), (30, 2708056), (39, 2083120), (40, 2031042), (48, 1692535), (52, 1562340), (60, 1354028), (65, 1249872), (78, 1041560), (80, 1015521), (104, 781170), (120, 677014), (130, 624936), (156, 520780), (169, 480720), (195, 416624), (208, 390585), (240, 338507), (260, 312468), (312, 260390), (338, 240360), (390, 208312), (507, 160240), (520, 156234), (624, 130195), (676, 120180), (780, 104156), (845, 96144), (1014, 80120), (1040, 78117), (1352, 60090), (1560, 52078), (1690, 48072), (2003, 40560), (2028, 40060), (2535, 32048), (2704, 30045), (3120, 26039), (3380, 24036), (4006, 20280), (4056, 20030), (5070, 16024), (6009, 13520), (6760, 12018), (8012, 10140), (8112, 10015)]