28440790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:269

約数の個数: 64

約数和(自身を含む): 61286400

約数和(自身を除く): 32845610

約数列:

[1, 2, 5, 7, 10, 14, 35, 37, 70, 74, 79, 139, 158, 185, 259, 278, 370, 395, 518, 553, 695, 790, 973, 1106, 1295, 1390, 1946, 2590, 2765, 2923, 4865, 5143, 5530, 5846, 9730, 10286, 10981, 14615, 20461, 21962, 25715, 29230, 36001, 40922, 51430, 54905, 72002, 76867, 102305, 109810, 153734, 180005, 204610, 360010, 384335, 406297, 768670, 812594, 2031485, 2844079, 4062970, 5688158, 14220395, 28440790]

約数ペア:

[(1, 28440790), (2, 14220395), (5, 5688158), (7, 4062970), (10, 2844079), (14, 2031485), (35, 812594), (37, 768670), (70, 406297), (74, 384335), (79, 360010), (139, 204610), (158, 180005), (185, 153734), (259, 109810), (278, 102305), (370, 76867), (395, 72002), (518, 54905), (553, 51430), (695, 40922), (790, 36001), (973, 29230), (1106, 25715), (1295, 21962), (1390, 20461), (1946, 14615), (2590, 10981), (2765, 10286), (2923, 9730), (4865, 5846), (5143, 5530)]