20723680

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{401}}^1$

素因数の和:452

約数の個数: 96

約数和(自身を含む): 54704160

約数和(自身を除く): 33980480

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 32, 34, 38, 40, 68, 76, 80, 85, 95, 136, 152, 160, 170, 190, 272, 304, 323, 340, 380, 401, 544, 608, 646, 680, 760, 802, 1292, 1360, 1520, 1604, 1615, 2005, 2584, 2720, 3040, 3208, 3230, 4010, 5168, 6416, 6460, 6817, 7619, 8020, 10336, 12832, 12920, 13634, 15238, 16040, 25840, 27268, 30476, 32080, 34085, 38095, 51680, 54536, 60952, 64160, 68170, 76190, 109072, 121904, 129523, 136340, 152380, 218144, 243808, 259046, 272680, 304760, 518092, 545360, 609520, 647615, 1036184, 1090720, 1219040, 1295230, 2072368, 2590460, 4144736, 5180920, 10361840, 20723680]

約数ペア:

[(1, 20723680), (2, 10361840), (4, 5180920), (5, 4144736), (8, 2590460), (10, 2072368), (16, 1295230), (17, 1219040), (19, 1090720), (20, 1036184), (32, 647615), (34, 609520), (38, 545360), (40, 518092), (68, 304760), (76, 272680), (80, 259046), (85, 243808), (95, 218144), (136, 152380), (152, 136340), (160, 129523), (170, 121904), (190, 109072), (272, 76190), (304, 68170), (323, 64160), (340, 60952), (380, 54536), (401, 51680), (544, 38095), (608, 34085), (646, 32080), (680, 30476), (760, 27268), (802, 25840), (1292, 16040), (1360, 15238), (1520, 13634), (1604, 12920), (1615, 12832), (2005, 10336), (2584, 8020), (2720, 7619), (3040, 6817), (3208, 6460), (3230, 6416), (4010, 5168)]