18240080

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1$

素因数の和:204

約数の個数: 80

約数和(自身を含む): 44622144

約数和(自身を除く): 26382064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 67, 80, 82, 83, 134, 164, 166, 205, 268, 328, 332, 335, 410, 415, 536, 656, 664, 670, 820, 830, 1072, 1328, 1340, 1640, 1660, 2680, 2747, 3280, 3320, 3403, 5360, 5494, 5561, 6640, 6806, 10988, 11122, 13612, 13735, 17015, 21976, 22244, 27224, 27470, 27805, 34030, 43952, 44488, 54448, 54940, 55610, 68060, 88976, 109880, 111220, 136120, 219760, 222440, 228001, 272240, 444880, 456002, 912004, 1140005, 1824008, 2280010, 3648016, 4560020, 9120040, 18240080]

約数ペア:

[(1, 18240080), (2, 9120040), (4, 4560020), (5, 3648016), (8, 2280010), (10, 1824008), (16, 1140005), (20, 912004), (40, 456002), (41, 444880), (67, 272240), (80, 228001), (82, 222440), (83, 219760), (134, 136120), (164, 111220), (166, 109880), (205, 88976), (268, 68060), (328, 55610), (332, 54940), (335, 54448), (410, 44488), (415, 43952), (536, 34030), (656, 27805), (664, 27470), (670, 27224), (820, 22244), (830, 21976), (1072, 17015), (1328, 13735), (1340, 13612), (1640, 11122), (1660, 10988), (2680, 6806), (2747, 6640), (3280, 5561), (3320, 5494), (3403, 5360)]