1988188720

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{16361}}^1$

素因数の和:16419

約数の個数: 120

約数和(自身を含む): 5551037568

約数和(自身を除く): 3562848848

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 49, 56, 62, 70, 80, 98, 112, 124, 140, 155, 196, 217, 245, 248, 280, 310, 392, 434, 490, 496, 560, 620, 784, 868, 980, 1085, 1240, 1519, 1736, 1960, 2170, 2480, 3038, 3472, 3920, 4340, 6076, 7595, 8680, 12152, 15190, 16361, 17360, 24304, 30380, 32722, 60760, 65444, 81805, 114527, 121520, 130888, 163610, 229054, 261776, 327220, 458108, 507191, 572635, 654440, 801689, 916216, 1014382, 1145270, 1308880, 1603378, 1832432, 2028764, 2290540, 2535955, 3206756, 3550337, 4008445, 4057528, 4581080, 5071910, 6413512, 7100674, 8016890, 8115056, 9162160, 10143820, 12827024, 14201348, 16033780, 17751685, 20287640, 24852359, 28402696, 32067560, 35503370, 40575280, 49704718, 56805392, 64135120, 71006740, 99409436, 124261795, 142013480, 198818872, 248523590, 284026960, 397637744, 497047180, 994094360, 1988188720]

約数ペア:

[(1, 1988188720), (2, 994094360), (4, 497047180), (5, 397637744), (7, 284026960), (8, 248523590), (10, 198818872), (14, 142013480), (16, 124261795), (20, 99409436), (28, 71006740), (31, 64135120), (35, 56805392), (40, 49704718), (49, 40575280), (56, 35503370), (62, 32067560), (70, 28402696), (80, 24852359), (98, 20287640), (112, 17751685), (124, 16033780), (140, 14201348), (155, 12827024), (196, 10143820), (217, 9162160), (245, 8115056), (248, 8016890), (280, 7100674), (310, 6413512), (392, 5071910), (434, 4581080), (490, 4057528), (496, 4008445), (560, 3550337), (620, 3206756), (784, 2535955), (868, 2290540), (980, 2028764), (1085, 1832432), (1240, 1603378), (1519, 1308880), (1736, 1145270), (1960, 1014382), (2170, 916216), (2480, 801689), (3038, 654440), (3472, 572635), (3920, 507191), (4340, 458108), (6076, 327220), (7595, 261776), (8680, 229054), (12152, 163610), (15190, 130888), (16361, 121520), (17360, 114527), (24304, 81805), (30380, 65444), (32722, 60760)]