19495520

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1$

素因数の和:109

約数の個数: 144

約数和(自身を含む): 54295920

約数和(自身を除く): 34800400

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 32, 38, 40, 44, 53, 55, 76, 80, 88, 95, 106, 110, 121, 152, 160, 176, 190, 209, 212, 220, 242, 265, 304, 352, 380, 418, 424, 440, 484, 530, 583, 605, 608, 760, 836, 848, 880, 968, 1007, 1045, 1060, 1166, 1210, 1520, 1672, 1696, 1760, 1936, 2014, 2090, 2120, 2299, 2332, 2420, 2915, 3040, 3344, 3872, 4028, 4180, 4240, 4598, 4664, 4840, 5035, 5830, 6413, 6688, 8056, 8360, 8480, 9196, 9328, 9680, 10070, 11077, 11495, 11660, 12826, 16112, 16720, 18392, 18656, 19360, 20140, 22154, 22990, 23320, 25652, 32065, 32224, 33440, 36784, 40280, 44308, 45980, 46640, 51304, 55385, 64130, 73568, 80560, 88616, 91960, 93280, 102608, 110770, 121847, 128260, 161120, 177232, 183920, 205216, 221540, 243694, 256520, 354464, 367840, 443080, 487388, 513040, 609235, 886160, 974776, 1026080, 1218470, 1772320, 1949552, 2436940, 3899104, 4873880, 9747760, 19495520]

約数ペア:

[(1, 19495520), (2, 9747760), (4, 4873880), (5, 3899104), (8, 2436940), (10, 1949552), (11, 1772320), (16, 1218470), (19, 1026080), (20, 974776), (22, 886160), (32, 609235), (38, 513040), (40, 487388), (44, 443080), (53, 367840), (55, 354464), (76, 256520), (80, 243694), (88, 221540), (95, 205216), (106, 183920), (110, 177232), (121, 161120), (152, 128260), (160, 121847), (176, 110770), (190, 102608), (209, 93280), (212, 91960), (220, 88616), (242, 80560), (265, 73568), (304, 64130), (352, 55385), (380, 51304), (418, 46640), (424, 45980), (440, 44308), (484, 40280), (530, 36784), (583, 33440), (605, 32224), (608, 32065), (760, 25652), (836, 23320), (848, 22990), (880, 22154), (968, 20140), (1007, 19360), (1045, 18656), (1060, 18392), (1166, 16720), (1210, 16112), (1520, 12826), (1672, 11660), (1696, 11495), (1760, 11077), (1936, 10070), (2014, 9680), (2090, 9328), (2120, 9196), (2299, 8480), (2332, 8360), (2420, 8056), (2915, 6688), (3040, 6413), (3344, 5830), (3872, 5035), (4028, 4840), (4180, 4664), (4240, 4598)]