20987040

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1901}}^1$

素因数の和:1942

約数の個数: 96

約数和(自身を含む): 69019776

約数和(自身を除く): 48032736

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 32, 40, 46, 48, 60, 69, 80, 92, 96, 115, 120, 138, 160, 184, 230, 240, 276, 345, 368, 460, 480, 552, 690, 736, 920, 1104, 1380, 1840, 1901, 2208, 2760, 3680, 3802, 5520, 5703, 7604, 9505, 11040, 11406, 15208, 19010, 22812, 28515, 30416, 38020, 43723, 45624, 57030, 60832, 76040, 87446, 91248, 114060, 131169, 152080, 174892, 182496, 218615, 228120, 262338, 304160, 349784, 437230, 456240, 524676, 655845, 699568, 874460, 912480, 1049352, 1311690, 1399136, 1748920, 2098704, 2623380, 3497840, 4197408, 5246760, 6995680, 10493520, 20987040]

約数ペア:

[(1, 20987040), (2, 10493520), (3, 6995680), (4, 5246760), (5, 4197408), (6, 3497840), (8, 2623380), (10, 2098704), (12, 1748920), (15, 1399136), (16, 1311690), (20, 1049352), (23, 912480), (24, 874460), (30, 699568), (32, 655845), (40, 524676), (46, 456240), (48, 437230), (60, 349784), (69, 304160), (80, 262338), (92, 228120), (96, 218615), (115, 182496), (120, 174892), (138, 152080), (160, 131169), (184, 114060), (230, 91248), (240, 87446), (276, 76040), (345, 60832), (368, 57030), (460, 45624), (480, 43723), (552, 38020), (690, 30416), (736, 28515), (920, 22812), (1104, 19010), (1380, 15208), (1840, 11406), (1901, 11040), (2208, 9505), (2760, 7604), (3680, 5703), (3802, 5520)]