128893520

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{131}}^1\times {\mathrm{251}}^1$

素因数の和:409

約数の個数: 120

約数和(自身を含む): 352664928

約数和(自身を除く): 223771408

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 131, 140, 196, 245, 251, 262, 280, 392, 490, 502, 524, 560, 655, 784, 917, 980, 1004, 1048, 1255, 1310, 1757, 1834, 1960, 2008, 2096, 2510, 2620, 3514, 3668, 3920, 4016, 4585, 5020, 5240, 6419, 7028, 7336, 8785, 9170, 10040, 10480, 12299, 12838, 14056, 14672, 17570, 18340, 20080, 24598, 25676, 28112, 32095, 32881, 35140, 36680, 49196, 51352, 61495, 64190, 65762, 70280, 73360, 98392, 102704, 122990, 128380, 131524, 140560, 164405, 196784, 230167, 245980, 256760, 263048, 328810, 460334, 491960, 513520, 526096, 657620, 920668, 983920, 1150835, 1315240, 1611169, 1841336, 2301670, 2630480, 3222338, 3682672, 4603340, 6444676, 8055845, 9206680, 12889352, 16111690, 18413360, 25778704, 32223380, 64446760, 128893520]

約数ペア:

[(1, 128893520), (2, 64446760), (4, 32223380), (5, 25778704), (7, 18413360), (8, 16111690), (10, 12889352), (14, 9206680), (16, 8055845), (20, 6444676), (28, 4603340), (35, 3682672), (40, 3222338), (49, 2630480), (56, 2301670), (70, 1841336), (80, 1611169), (98, 1315240), (112, 1150835), (131, 983920), (140, 920668), (196, 657620), (245, 526096), (251, 513520), (262, 491960), (280, 460334), (392, 328810), (490, 263048), (502, 256760), (524, 245980), (560, 230167), (655, 196784), (784, 164405), (917, 140560), (980, 131524), (1004, 128380), (1048, 122990), (1255, 102704), (1310, 98392), (1757, 73360), (1834, 70280), (1960, 65762), (2008, 64190), (2096, 61495), (2510, 51352), (2620, 49196), (3514, 36680), (3668, 35140), (3920, 32881), (4016, 32095), (4585, 28112), (5020, 25676), (5240, 24598), (6419, 20080), (7028, 18340), (7336, 17570), (8785, 14672), (9170, 14056), (10040, 12838), (10480, 12299)]