21612640

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{839}}^1$

素因数の和:884

約数の個数: 96

約数和(自身を含む): 60963840

約数和(自身を除く): 39351200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 160, 161, 184, 224, 230, 280, 322, 368, 460, 560, 644, 736, 805, 839, 920, 1120, 1288, 1610, 1678, 1840, 2576, 3220, 3356, 3680, 4195, 5152, 5873, 6440, 6712, 8390, 11746, 12880, 13424, 16780, 19297, 23492, 25760, 26848, 29365, 33560, 38594, 46984, 58730, 67120, 77188, 93968, 96485, 117460, 134240, 135079, 154376, 187936, 192970, 234920, 270158, 308752, 385940, 469840, 540316, 617504, 675395, 771880, 939680, 1080632, 1350790, 1543760, 2161264, 2701580, 3087520, 4322528, 5403160, 10806320, 21612640]

約数ペア:

[(1, 21612640), (2, 10806320), (4, 5403160), (5, 4322528), (7, 3087520), (8, 2701580), (10, 2161264), (14, 1543760), (16, 1350790), (20, 1080632), (23, 939680), (28, 771880), (32, 675395), (35, 617504), (40, 540316), (46, 469840), (56, 385940), (70, 308752), (80, 270158), (92, 234920), (112, 192970), (115, 187936), (140, 154376), (160, 135079), (161, 134240), (184, 117460), (224, 96485), (230, 93968), (280, 77188), (322, 67120), (368, 58730), (460, 46984), (560, 38594), (644, 33560), (736, 29365), (805, 26848), (839, 25760), (920, 23492), (1120, 19297), (1288, 16780), (1610, 13424), (1678, 12880), (1840, 11746), (2576, 8390), (3220, 6712), (3356, 6440), (3680, 5873), (4195, 5152)]