280261384

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1\times {\mathrm{421}}^1$

素因数の和:650

約数の個数: 64

約数和(自身を含む): 585955440

約数和(自身を除く): 305694056

約数列:

[1, 2, 4, 8, 13, 26, 37, 52, 74, 104, 148, 173, 296, 346, 421, 481, 692, 842, 962, 1384, 1684, 1924, 2249, 3368, 3848, 4498, 5473, 6401, 8996, 10946, 12802, 15577, 17992, 21892, 25604, 31154, 43784, 51208, 62308, 72833, 83213, 124616, 145666, 166426, 202501, 291332, 332852, 405002, 582664, 665704, 810004, 946829, 1620008, 1893658, 2694821, 3787316, 5389642, 7574632, 10779284, 21558568, 35032673, 70065346, 140130692, 280261384]

約数ペア:

[(1, 280261384), (2, 140130692), (4, 70065346), (8, 35032673), (13, 21558568), (26, 10779284), (37, 7574632), (52, 5389642), (74, 3787316), (104, 2694821), (148, 1893658), (173, 1620008), (296, 946829), (346, 810004), (421, 665704), (481, 582664), (692, 405002), (842, 332852), (962, 291332), (1384, 202501), (1684, 166426), (1924, 145666), (2249, 124616), (3368, 83213), (3848, 72833), (4498, 62308), (5473, 51208), (6401, 43784), (8996, 31154), (10946, 25604), (12802, 21892), (15577, 17992)]