18040880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1$

素因数の和:139

約数の個数: 160

約数和(自身を含む): 52496640

約数和(自身を除く): 34455760

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 19, 20, 22, 26, 38, 40, 44, 52, 55, 65, 76, 80, 83, 88, 95, 104, 110, 130, 143, 152, 166, 176, 190, 208, 209, 220, 247, 260, 286, 304, 332, 380, 415, 418, 440, 494, 520, 572, 664, 715, 760, 830, 836, 880, 913, 988, 1040, 1045, 1079, 1144, 1235, 1328, 1430, 1520, 1577, 1660, 1672, 1826, 1976, 2090, 2158, 2288, 2470, 2717, 2860, 3154, 3320, 3344, 3652, 3952, 4180, 4316, 4565, 4940, 5395, 5434, 5720, 6308, 6640, 7304, 7885, 8360, 8632, 9130, 9880, 10790, 10868, 11440, 11869, 12616, 13585, 14608, 15770, 16720, 17264, 17347, 18260, 19760, 20501, 21580, 21736, 23738, 25232, 27170, 31540, 34694, 36520, 41002, 43160, 43472, 47476, 54340, 59345, 63080, 69388, 73040, 82004, 86320, 86735, 94952, 102505, 108680, 118690, 126160, 138776, 164008, 173470, 189904, 205010, 217360, 225511, 237380, 277552, 328016, 346940, 410020, 451022, 474760, 693880, 820040, 902044, 949520, 1127555, 1387760, 1640080, 1804088, 2255110, 3608176, 4510220, 9020440, 18040880]

約数ペア:

[(1, 18040880), (2, 9020440), (4, 4510220), (5, 3608176), (8, 2255110), (10, 1804088), (11, 1640080), (13, 1387760), (16, 1127555), (19, 949520), (20, 902044), (22, 820040), (26, 693880), (38, 474760), (40, 451022), (44, 410020), (52, 346940), (55, 328016), (65, 277552), (76, 237380), (80, 225511), (83, 217360), (88, 205010), (95, 189904), (104, 173470), (110, 164008), (130, 138776), (143, 126160), (152, 118690), (166, 108680), (176, 102505), (190, 94952), (208, 86735), (209, 86320), (220, 82004), (247, 73040), (260, 69388), (286, 63080), (304, 59345), (332, 54340), (380, 47476), (415, 43472), (418, 43160), (440, 41002), (494, 36520), (520, 34694), (572, 31540), (664, 27170), (715, 25232), (760, 23738), (830, 21736), (836, 21580), (880, 20501), (913, 19760), (988, 18260), (1040, 17347), (1045, 17264), (1079, 16720), (1144, 15770), (1235, 14608), (1328, 13585), (1430, 12616), (1520, 11869), (1577, 11440), (1660, 10868), (1672, 10790), (1826, 9880), (1976, 9130), (2090, 8632), (2158, 8360), (2288, 7885), (2470, 7304), (2717, 6640), (2860, 6308), (3154, 5720), (3320, 5434), (3344, 5395), (3652, 4940), (3952, 4565), (4180, 4316)]