397392340

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{197}}^1\times {\mathrm{349}}^1$

素因数の和:589

約数の個数: 72

約数和(自身を含む): 893554200

約数和(自身を除く): 496161860

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 197, 289, 340, 349, 394, 578, 698, 788, 985, 1156, 1396, 1445, 1745, 1970, 2890, 3349, 3490, 3940, 5780, 5933, 6698, 6980, 11866, 13396, 16745, 23732, 29665, 33490, 56933, 59330, 66980, 68753, 100861, 113866, 118660, 137506, 201722, 227732, 275012, 284665, 343765, 403444, 504305, 569330, 687530, 1008610, 1138660, 1168801, 1375060, 2017220, 2337602, 4675204, 5844005, 11688010, 19869617, 23376020, 39739234, 79478468, 99348085, 198696170, 397392340]

約数ペア:

[(1, 397392340), (2, 198696170), (4, 99348085), (5, 79478468), (10, 39739234), (17, 23376020), (20, 19869617), (34, 11688010), (68, 5844005), (85, 4675204), (170, 2337602), (197, 2017220), (289, 1375060), (340, 1168801), (349, 1138660), (394, 1008610), (578, 687530), (698, 569330), (788, 504305), (985, 403444), (1156, 343765), (1396, 284665), (1445, 275012), (1745, 227732), (1970, 201722), (2890, 137506), (3349, 118660), (3490, 113866), (3940, 100861), (5780, 68753), (5933, 66980), (6698, 59330), (6980, 56933), (11866, 33490), (13396, 29665), (16745, 23732)]