18330440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{271}}^1$

素因数の和:390

約数の個数: 64

約数和(自身を含む): 44064000

約数和(自身を除く): 25733560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 89, 95, 152, 178, 190, 271, 356, 380, 445, 542, 712, 760, 890, 1084, 1355, 1691, 1780, 2168, 2710, 3382, 3560, 5149, 5420, 6764, 8455, 10298, 10840, 13528, 16910, 20596, 24119, 25745, 33820, 41192, 48238, 51490, 67640, 96476, 102980, 120595, 192952, 205960, 241190, 458261, 482380, 916522, 964760, 1833044, 2291305, 3666088, 4582610, 9165220, 18330440]

約数ペア:

[(1, 18330440), (2, 9165220), (4, 4582610), (5, 3666088), (8, 2291305), (10, 1833044), (19, 964760), (20, 916522), (38, 482380), (40, 458261), (76, 241190), (89, 205960), (95, 192952), (152, 120595), (178, 102980), (190, 96476), (271, 67640), (356, 51490), (380, 48238), (445, 41192), (542, 33820), (712, 25745), (760, 24119), (890, 20596), (1084, 16910), (1355, 13528), (1691, 10840), (1780, 10298), (2168, 8455), (2710, 6764), (3382, 5420), (3560, 5149)]