20924960

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{157}}^1$

素因数の和:203

約数の個数: 144

約数和(自身を含む): 61276824

約数和(自身を除く): 40351864

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 32, 34, 35, 40, 49, 56, 68, 70, 80, 85, 98, 112, 119, 136, 140, 157, 160, 170, 196, 224, 238, 245, 272, 280, 314, 340, 392, 476, 490, 544, 560, 595, 628, 680, 784, 785, 833, 952, 980, 1099, 1120, 1190, 1256, 1360, 1568, 1570, 1666, 1904, 1960, 2198, 2380, 2512, 2669, 2720, 3140, 3332, 3808, 3920, 4165, 4396, 4760, 5024, 5338, 5495, 6280, 6664, 7693, 7840, 8330, 8792, 9520, 10676, 10990, 12560, 13328, 13345, 15386, 16660, 17584, 18683, 19040, 21352, 21980, 25120, 26656, 26690, 30772, 33320, 35168, 37366, 38465, 42704, 43960, 53380, 61544, 66640, 74732, 76930, 85408, 87920, 93415, 106760, 123088, 130781, 133280, 149464, 153860, 175840, 186830, 213520, 246176, 261562, 298928, 307720, 373660, 427040, 523124, 597856, 615440, 653905, 747320, 1046248, 1230880, 1307810, 1494640, 2092496, 2615620, 2989280, 4184992, 5231240, 10462480, 20924960]

約数ペア:

[(1, 20924960), (2, 10462480), (4, 5231240), (5, 4184992), (7, 2989280), (8, 2615620), (10, 2092496), (14, 1494640), (16, 1307810), (17, 1230880), (20, 1046248), (28, 747320), (32, 653905), (34, 615440), (35, 597856), (40, 523124), (49, 427040), (56, 373660), (68, 307720), (70, 298928), (80, 261562), (85, 246176), (98, 213520), (112, 186830), (119, 175840), (136, 153860), (140, 149464), (157, 133280), (160, 130781), (170, 123088), (196, 106760), (224, 93415), (238, 87920), (245, 85408), (272, 76930), (280, 74732), (314, 66640), (340, 61544), (392, 53380), (476, 43960), (490, 42704), (544, 38465), (560, 37366), (595, 35168), (628, 33320), (680, 30772), (784, 26690), (785, 26656), (833, 25120), (952, 21980), (980, 21352), (1099, 19040), (1120, 18683), (1190, 17584), (1256, 16660), (1360, 15386), (1568, 13345), (1570, 13328), (1666, 12560), (1904, 10990), (1960, 10676), (2198, 9520), (2380, 8792), (2512, 8330), (2669, 7840), (2720, 7693), (3140, 6664), (3332, 6280), (3808, 5495), (3920, 5338), (4165, 5024), (4396, 4760)]