18801640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1$

素因数の和:227

約数の個数: 128

約数和(自身を含む): 52617600

約数和(自身を除く): 33815960

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 19, 20, 22, 26, 38, 40, 44, 52, 55, 65, 76, 88, 95, 104, 110, 130, 143, 152, 173, 190, 209, 220, 247, 260, 286, 346, 380, 418, 440, 494, 520, 572, 692, 715, 760, 836, 865, 988, 1045, 1144, 1235, 1384, 1430, 1672, 1730, 1903, 1976, 2090, 2249, 2470, 2717, 2860, 3287, 3460, 3806, 4180, 4498, 4940, 5434, 5720, 6574, 6920, 7612, 8360, 8996, 9515, 9880, 10868, 11245, 13148, 13585, 15224, 16435, 17992, 19030, 21736, 22490, 24739, 26296, 27170, 32870, 36157, 38060, 42731, 44980, 49478, 54340, 65740, 72314, 76120, 85462, 89960, 98956, 108680, 123695, 131480, 144628, 170924, 180785, 197912, 213655, 247390, 289256, 341848, 361570, 427310, 470041, 494780, 723140, 854620, 940082, 989560, 1446280, 1709240, 1880164, 2350205, 3760328, 4700410, 9400820, 18801640]

約数ペア:

[(1, 18801640), (2, 9400820), (4, 4700410), (5, 3760328), (8, 2350205), (10, 1880164), (11, 1709240), (13, 1446280), (19, 989560), (20, 940082), (22, 854620), (26, 723140), (38, 494780), (40, 470041), (44, 427310), (52, 361570), (55, 341848), (65, 289256), (76, 247390), (88, 213655), (95, 197912), (104, 180785), (110, 170924), (130, 144628), (143, 131480), (152, 123695), (173, 108680), (190, 98956), (209, 89960), (220, 85462), (247, 76120), (260, 72314), (286, 65740), (346, 54340), (380, 49478), (418, 44980), (440, 42731), (494, 38060), (520, 36157), (572, 32870), (692, 27170), (715, 26296), (760, 24739), (836, 22490), (865, 21736), (988, 19030), (1045, 17992), (1144, 16435), (1235, 15224), (1384, 13585), (1430, 13148), (1672, 11245), (1730, 10868), (1903, 9880), (1976, 9515), (2090, 8996), (2249, 8360), (2470, 7612), (2717, 6920), (2860, 6574), (3287, 5720), (3460, 5434), (3806, 4940), (4180, 4498)]