7809220

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 17217648

約数和(自身を除く): 9408428

約数列:

[1, 2, 4, 5, 10, 20, 37, 61, 74, 122, 148, 173, 185, 244, 305, 346, 370, 610, 692, 740, 865, 1220, 1730, 2257, 3460, 4514, 6401, 9028, 10553, 11285, 12802, 21106, 22570, 25604, 32005, 42212, 45140, 52765, 64010, 105530, 128020, 211060, 390461, 780922, 1561844, 1952305, 3904610, 7809220]

約数ペア:

[(1, 7809220), (2, 3904610), (4, 1952305), (5, 1561844), (10, 780922), (20, 390461), (37, 211060), (61, 128020), (74, 105530), (122, 64010), (148, 52765), (173, 45140), (185, 42212), (244, 32005), (305, 25604), (346, 22570), (370, 21106), (610, 12802), (692, 11285), (740, 10553), (865, 9028), (1220, 6401), (1730, 4514), (2257, 3460)]