20165440

素因数分解:

$2^6\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:140

約数の個数: 112

約数和(自身を含む): 51846480

約数和(自身を除く): 31681040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 41, 53, 58, 64, 80, 82, 106, 116, 145, 160, 164, 205, 212, 232, 265, 290, 320, 328, 410, 424, 464, 530, 580, 656, 820, 848, 928, 1060, 1160, 1189, 1312, 1537, 1640, 1696, 1856, 2120, 2173, 2320, 2378, 2624, 3074, 3280, 3392, 4240, 4346, 4640, 4756, 5945, 6148, 6560, 7685, 8480, 8692, 9280, 9512, 10865, 11890, 12296, 13120, 15370, 16960, 17384, 19024, 21730, 23780, 24592, 30740, 34768, 38048, 43460, 47560, 49184, 61480, 63017, 69536, 76096, 86920, 95120, 98368, 122960, 126034, 139072, 173840, 190240, 245920, 252068, 315085, 347680, 380480, 491840, 504136, 630170, 695360, 1008272, 1260340, 2016544, 2520680, 4033088, 5041360, 10082720, 20165440]

約数ペア:

[(1, 20165440), (2, 10082720), (4, 5041360), (5, 4033088), (8, 2520680), (10, 2016544), (16, 1260340), (20, 1008272), (29, 695360), (32, 630170), (40, 504136), (41, 491840), (53, 380480), (58, 347680), (64, 315085), (80, 252068), (82, 245920), (106, 190240), (116, 173840), (145, 139072), (160, 126034), (164, 122960), (205, 98368), (212, 95120), (232, 86920), (265, 76096), (290, 69536), (320, 63017), (328, 61480), (410, 49184), (424, 47560), (464, 43460), (530, 38048), (580, 34768), (656, 30740), (820, 24592), (848, 23780), (928, 21730), (1060, 19024), (1160, 17384), (1189, 16960), (1312, 15370), (1537, 13120), (1640, 12296), (1696, 11890), (1856, 10865), (2120, 9512), (2173, 9280), (2320, 8692), (2378, 8480), (2624, 7685), (3074, 6560), (3280, 6148), (3392, 5945), (4240, 4756), (4346, 4640)]