21535920

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{4273}}^1$

素因数の和:4299

約数の個数: 120

約数和(自身を含む): 82676256

約数和(自身を除く): 61140336

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 4273, 5040, 8546, 12819, 17092, 21365, 25638, 29911, 34184, 38457, 42730, 51276, 59822, 64095, 68368, 76914, 85460, 89733, 102552, 119644, 128190, 149555, 153828, 170920, 179466, 192285, 205104, 239288, 256380, 269199, 299110, 307656, 341840, 358932, 384570, 448665, 478576, 512760, 538398, 598220, 615312, 717864, 769140, 897330, 1025520, 1076796, 1196440, 1345995, 1435728, 1538280, 1794660, 2153592, 2392880, 2691990, 3076560, 3589320, 4307184, 5383980, 7178640, 10767960, 21535920]

約数ペア:

[(1, 21535920), (2, 10767960), (3, 7178640), (4, 5383980), (5, 4307184), (6, 3589320), (7, 3076560), (8, 2691990), (9, 2392880), (10, 2153592), (12, 1794660), (14, 1538280), (15, 1435728), (16, 1345995), (18, 1196440), (20, 1076796), (21, 1025520), (24, 897330), (28, 769140), (30, 717864), (35, 615312), (36, 598220), (40, 538398), (42, 512760), (45, 478576), (48, 448665), (56, 384570), (60, 358932), (63, 341840), (70, 307656), (72, 299110), (80, 269199), (84, 256380), (90, 239288), (105, 205104), (112, 192285), (120, 179466), (126, 170920), (140, 153828), (144, 149555), (168, 128190), (180, 119644), (210, 102552), (240, 89733), (252, 85460), (280, 76914), (315, 68368), (336, 64095), (360, 59822), (420, 51276), (504, 42730), (560, 38457), (630, 34184), (720, 29911), (840, 25638), (1008, 21365), (1260, 17092), (1680, 12819), (2520, 8546), (4273, 5040)]