21309840

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1741}}^1$

素因数の和:1777

約数の個数: 120

約数和(自身を含む): 75818808

約数和(自身を除く): 54508968

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 34, 36, 40, 45, 48, 51, 60, 68, 72, 80, 85, 90, 102, 120, 136, 144, 153, 170, 180, 204, 240, 255, 272, 306, 340, 360, 408, 510, 612, 680, 720, 765, 816, 1020, 1224, 1360, 1530, 1741, 2040, 2448, 3060, 3482, 4080, 5223, 6120, 6964, 8705, 10446, 12240, 13928, 15669, 17410, 20892, 26115, 27856, 29597, 31338, 34820, 41784, 52230, 59194, 62676, 69640, 78345, 83568, 88791, 104460, 118388, 125352, 139280, 147985, 156690, 177582, 208920, 236776, 250704, 266373, 295970, 313380, 355164, 417840, 443955, 473552, 532746, 591940, 626760, 710328, 887910, 1065492, 1183880, 1253520, 1331865, 1420656, 1775820, 2130984, 2367760, 2663730, 3551640, 4261968, 5327460, 7103280, 10654920, 21309840]

約数ペア:

[(1, 21309840), (2, 10654920), (3, 7103280), (4, 5327460), (5, 4261968), (6, 3551640), (8, 2663730), (9, 2367760), (10, 2130984), (12, 1775820), (15, 1420656), (16, 1331865), (17, 1253520), (18, 1183880), (20, 1065492), (24, 887910), (30, 710328), (34, 626760), (36, 591940), (40, 532746), (45, 473552), (48, 443955), (51, 417840), (60, 355164), (68, 313380), (72, 295970), (80, 266373), (85, 250704), (90, 236776), (102, 208920), (120, 177582), (136, 156690), (144, 147985), (153, 139280), (170, 125352), (180, 118388), (204, 104460), (240, 88791), (255, 83568), (272, 78345), (306, 69640), (340, 62676), (360, 59194), (408, 52230), (510, 41784), (612, 34820), (680, 31338), (720, 29597), (765, 27856), (816, 26115), (1020, 20892), (1224, 17410), (1360, 15669), (1530, 13928), (1741, 12240), (2040, 10446), (2448, 8705), (3060, 6964), (3482, 6120), (4080, 5223)]