21530560

素因数分解:

$2^6\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1103}}^1$

素因数の和:1181

約数の個数: 56

約数和(自身を含む): 52157376

約数和(自身を除く): 30626816

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 160, 244, 305, 320, 488, 610, 976, 1103, 1220, 1952, 2206, 2440, 3904, 4412, 4880, 5515, 8824, 9760, 11030, 17648, 19520, 22060, 35296, 44120, 67283, 70592, 88240, 134566, 176480, 269132, 336415, 352960, 538264, 672830, 1076528, 1345660, 2153056, 2691320, 4306112, 5382640, 10765280, 21530560]

約数ペア:

[(1, 21530560), (2, 10765280), (4, 5382640), (5, 4306112), (8, 2691320), (10, 2153056), (16, 1345660), (20, 1076528), (32, 672830), (40, 538264), (61, 352960), (64, 336415), (80, 269132), (122, 176480), (160, 134566), (244, 88240), (305, 70592), (320, 67283), (488, 44120), (610, 35296), (976, 22060), (1103, 19520), (1220, 17648), (1952, 11030), (2206, 9760), (2440, 8824), (3904, 5515), (4412, 4880)]