21152880

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{1399}}^1$

素因数の和:1428

約数の個数: 160

約数和(自身を含む): 83328000

約数和(自身を除く): 62175120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 168, 180, 189, 210, 216, 240, 252, 270, 280, 315, 336, 360, 378, 420, 432, 504, 540, 560, 630, 720, 756, 840, 945, 1008, 1080, 1260, 1399, 1512, 1680, 1890, 2160, 2520, 2798, 3024, 3780, 4197, 5040, 5596, 6995, 7560, 8394, 9793, 11192, 12591, 13990, 15120, 16788, 19586, 20985, 22384, 25182, 27980, 29379, 33576, 37773, 39172, 41970, 48965, 50364, 55960, 58758, 62955, 67152, 75546, 78344, 83940, 88137, 97930, 100728, 111920, 117516, 125910, 146895, 151092, 156688, 167880, 176274, 188865, 195860, 201456, 235032, 251820, 264411, 293790, 302184, 335760, 352548, 377730, 391720, 440685, 470064, 503640, 528822, 587580, 604368, 705096, 755460, 783440, 881370, 1007280, 1057644, 1175160, 1322055, 1410192, 1510920, 1762740, 2115288, 2350320, 2644110, 3021840, 3525480, 4230576, 5288220, 7050960, 10576440, 21152880]

約数ペア:

[(1, 21152880), (2, 10576440), (3, 7050960), (4, 5288220), (5, 4230576), (6, 3525480), (7, 3021840), (8, 2644110), (9, 2350320), (10, 2115288), (12, 1762740), (14, 1510920), (15, 1410192), (16, 1322055), (18, 1175160), (20, 1057644), (21, 1007280), (24, 881370), (27, 783440), (28, 755460), (30, 705096), (35, 604368), (36, 587580), (40, 528822), (42, 503640), (45, 470064), (48, 440685), (54, 391720), (56, 377730), (60, 352548), (63, 335760), (70, 302184), (72, 293790), (80, 264411), (84, 251820), (90, 235032), (105, 201456), (108, 195860), (112, 188865), (120, 176274), (126, 167880), (135, 156688), (140, 151092), (144, 146895), (168, 125910), (180, 117516), (189, 111920), (210, 100728), (216, 97930), (240, 88137), (252, 83940), (270, 78344), (280, 75546), (315, 67152), (336, 62955), (360, 58758), (378, 55960), (420, 50364), (432, 48965), (504, 41970), (540, 39172), (560, 37773), (630, 33576), (720, 29379), (756, 27980), (840, 25182), (945, 22384), (1008, 20985), (1080, 19586), (1260, 16788), (1399, 15120), (1512, 13990), (1680, 12591), (1890, 11192), (2160, 9793), (2520, 8394), (2798, 7560), (3024, 6995), (3780, 5596), (4197, 5040)]