264865240

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{251}}^1$

素因数の和:353

約数の個数: 128

約数和(自身を含む): 661893120

約数和(自身を除く): 397027880

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 31, 37, 40, 46, 62, 74, 92, 115, 124, 148, 155, 184, 185, 230, 248, 251, 296, 310, 370, 460, 502, 620, 713, 740, 851, 920, 1004, 1147, 1240, 1255, 1426, 1480, 1702, 2008, 2294, 2510, 2852, 3404, 3565, 4255, 4588, 5020, 5704, 5735, 5773, 6808, 7130, 7781, 8510, 9176, 9287, 10040, 11470, 11546, 14260, 15562, 17020, 18574, 22940, 23092, 26381, 28520, 28865, 31124, 34040, 37148, 38905, 45880, 46184, 46435, 52762, 57730, 62248, 74296, 77810, 92870, 105524, 115460, 131905, 155620, 178963, 185740, 211048, 213601, 230920, 263810, 287897, 311240, 357926, 371480, 427202, 527620, 575794, 715852, 854404, 894815, 1055240, 1068005, 1151588, 1431704, 1439485, 1708808, 1789630, 2136010, 2303176, 2878970, 3579260, 4272020, 5757940, 6621631, 7158520, 8544040, 11515880, 13243262, 26486524, 33108155, 52973048, 66216310, 132432620, 264865240]

約数ペア:

[(1, 264865240), (2, 132432620), (4, 66216310), (5, 52973048), (8, 33108155), (10, 26486524), (20, 13243262), (23, 11515880), (31, 8544040), (37, 7158520), (40, 6621631), (46, 5757940), (62, 4272020), (74, 3579260), (92, 2878970), (115, 2303176), (124, 2136010), (148, 1789630), (155, 1708808), (184, 1439485), (185, 1431704), (230, 1151588), (248, 1068005), (251, 1055240), (296, 894815), (310, 854404), (370, 715852), (460, 575794), (502, 527620), (620, 427202), (713, 371480), (740, 357926), (851, 311240), (920, 287897), (1004, 263810), (1147, 230920), (1240, 213601), (1255, 211048), (1426, 185740), (1480, 178963), (1702, 155620), (2008, 131905), (2294, 115460), (2510, 105524), (2852, 92870), (3404, 77810), (3565, 74296), (4255, 62248), (4588, 57730), (5020, 52762), (5704, 46435), (5735, 46184), (5773, 45880), (6808, 38905), (7130, 37148), (7781, 34040), (8510, 31124), (9176, 28865), (9287, 28520), (10040, 26381), (11470, 23092), (11546, 22940), (14260, 18574), (15562, 17020)]