209428570

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{787}}^1$

素因数の和:919

約数の個数: 64

約数和(自身を含む): 428924160

約数和(自身を除く): 219495590

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 65, 89, 115, 130, 178, 230, 299, 445, 598, 787, 890, 1157, 1495, 1574, 2047, 2314, 2990, 3935, 4094, 5785, 7870, 10231, 10235, 11570, 18101, 20462, 20470, 26611, 36202, 51155, 53222, 70043, 90505, 102310, 133055, 140086, 181010, 235313, 266110, 350215, 470626, 700430, 910559, 1176565, 1610989, 1821118, 2353130, 3221978, 4552795, 8054945, 9105590, 16109890, 20942857, 41885714, 104714285, 209428570]

約数ペア:

[(1, 209428570), (2, 104714285), (5, 41885714), (10, 20942857), (13, 16109890), (23, 9105590), (26, 8054945), (46, 4552795), (65, 3221978), (89, 2353130), (115, 1821118), (130, 1610989), (178, 1176565), (230, 910559), (299, 700430), (445, 470626), (598, 350215), (787, 266110), (890, 235313), (1157, 181010), (1495, 140086), (1574, 133055), (2047, 102310), (2314, 90505), (2990, 70043), (3935, 53222), (4094, 51155), (5785, 36202), (7870, 26611), (10231, 20470), (10235, 20462), (11570, 18101)]