20978208

素因数分解:

$2^5\times 3^2\times {\mathrm{23}}^1\times {\mathrm{3167}}^1$

素因数の和:3206

約数の個数: 72

約数和(自身を含む): 62270208

約数和(自身を除く): 41292000

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 23, 24, 32, 36, 46, 48, 69, 72, 92, 96, 138, 144, 184, 207, 276, 288, 368, 414, 552, 736, 828, 1104, 1656, 2208, 3167, 3312, 6334, 6624, 9501, 12668, 19002, 25336, 28503, 38004, 50672, 57006, 72841, 76008, 101344, 114012, 145682, 152016, 218523, 228024, 291364, 304032, 437046, 456048, 582728, 655569, 874092, 912096, 1165456, 1311138, 1748184, 2330912, 2622276, 3496368, 5244552, 6992736, 10489104, 20978208]

約数ペア:

[(1, 20978208), (2, 10489104), (3, 6992736), (4, 5244552), (6, 3496368), (8, 2622276), (9, 2330912), (12, 1748184), (16, 1311138), (18, 1165456), (23, 912096), (24, 874092), (32, 655569), (36, 582728), (46, 456048), (48, 437046), (69, 304032), (72, 291364), (92, 228024), (96, 218523), (138, 152016), (144, 145682), (184, 114012), (207, 101344), (276, 76008), (288, 72841), (368, 57006), (414, 50672), (552, 38004), (736, 28503), (828, 25336), (1104, 19002), (1656, 12668), (2208, 9501), (3167, 6624), (3312, 6334)]