261657370

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{601}}^1$

素因数の和:835

約数の個数: 64

約数和(自身を含む): 540673056

約数和(自身を除く): 279015686

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 197, 221, 394, 442, 601, 985, 1105, 1202, 1970, 2210, 2561, 3005, 3349, 5122, 6010, 6698, 7813, 10217, 12805, 15626, 16745, 20434, 25610, 33490, 39065, 43537, 51085, 78130, 87074, 102170, 118397, 132821, 217685, 236794, 265642, 435370, 591985, 664105, 1183970, 1328210, 1539161, 2012749, 3078322, 4025498, 7695805, 10063745, 15391610, 20127490, 26165737, 52331474, 130828685, 261657370]

約数ペア:

[(1, 261657370), (2, 130828685), (5, 52331474), (10, 26165737), (13, 20127490), (17, 15391610), (26, 10063745), (34, 7695805), (65, 4025498), (85, 3078322), (130, 2012749), (170, 1539161), (197, 1328210), (221, 1183970), (394, 664105), (442, 591985), (601, 435370), (985, 265642), (1105, 236794), (1202, 217685), (1970, 132821), (2210, 118397), (2561, 102170), (3005, 87074), (3349, 78130), (5122, 51085), (6010, 43537), (6698, 39065), (7813, 33490), (10217, 25610), (12805, 20434), (15626, 16745)]