18987616

素因数分解:

$2^5\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1$

素因数の和:271

約数の個数: 48

約数和(自身を含む): 38782800

約数和(自身を除く): 19795184

約数列:

[1, 2, 4, 8, 16, 32, 59, 89, 113, 118, 178, 226, 236, 356, 452, 472, 712, 904, 944, 1424, 1808, 1888, 2848, 3616, 5251, 6667, 10057, 10502, 13334, 20114, 21004, 26668, 40228, 42008, 53336, 80456, 84016, 106672, 160912, 168032, 213344, 321824, 593363, 1186726, 2373452, 4746904, 9493808, 18987616]

約数ペア:

[(1, 18987616), (2, 9493808), (4, 4746904), (8, 2373452), (16, 1186726), (32, 593363), (59, 321824), (89, 213344), (113, 168032), (118, 160912), (178, 106672), (226, 84016), (236, 80456), (356, 53336), (452, 42008), (472, 40228), (712, 26668), (904, 21004), (944, 20114), (1424, 13334), (1808, 10502), (1888, 10057), (2848, 6667), (3616, 5251)]