647495420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{226397}}^1$

素因数の和:226430

約数の個数: 48

約数和(自身を含む): 1597464288

約数和(自身を除く): 949968868

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 226397, 452794, 905588, 1131985, 2263970, 2490367, 2943161, 4527940, 4980734, 5886322, 9961468, 11772644, 12451835, 14715805, 24903670, 29431610, 32374771, 49807340, 58863220, 64749542, 129499084, 161873855, 323747710, 647495420]

約数ペア:

[(1, 647495420), (2, 323747710), (4, 161873855), (5, 129499084), (10, 64749542), (11, 58863220), (13, 49807340), (20, 32374771), (22, 29431610), (26, 24903670), (44, 14715805), (52, 12451835), (55, 11772644), (65, 9961468), (110, 5886322), (130, 4980734), (143, 4527940), (220, 2943161), (260, 2490367), (286, 2263970), (572, 1131985), (715, 905588), (1430, 452794), (2860, 226397)]