21598880

素因数分解:

$2^5\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2213}}^1$

素因数の和:2289

約数の個数: 48

約数和(自身を含む): 51887304

約数和(自身を除く): 30288424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 80, 122, 160, 244, 305, 488, 610, 976, 1220, 1952, 2213, 2440, 4426, 4880, 8852, 9760, 11065, 17704, 22130, 35408, 44260, 70816, 88520, 134993, 177040, 269986, 354080, 539972, 674965, 1079944, 1349930, 2159888, 2699860, 4319776, 5399720, 10799440, 21598880]

約数ペア:

[(1, 21598880), (2, 10799440), (4, 5399720), (5, 4319776), (8, 2699860), (10, 2159888), (16, 1349930), (20, 1079944), (32, 674965), (40, 539972), (61, 354080), (80, 269986), (122, 177040), (160, 134993), (244, 88520), (305, 70816), (488, 44260), (610, 35408), (976, 22130), (1220, 17704), (1952, 11065), (2213, 9760), (2440, 8852), (4426, 4880)]