19858720

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{149}}^1$

素因数の和:195

約数の個数: 144

約数和(自身を含む): 58174200

約数和(自身を除く): 38315480

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, 149, 160, 170, 196, 224, 238, 245, 272, 280, 298, 340, 392, 476, 490, 544, 560, 595, 596, 680, 745, 784, 833, 952, 980, 1043, 1120, 1190, 1192, 1360, 1490, 1568, 1666, 1904, 1960, 2086, 2380, 2384, 2533, 2720, 2980, 3332, 3808, 3920, 4165, 4172, 4760, 4768, 5066, 5215, 5960, 6664, 7301, 7840, 8330, 8344, 9520, 10132, 10430, 11920, 12665, 13328, 14602, 16660, 16688, 17731, 19040, 20264, 20860, 23840, 25330, 26656, 29204, 33320, 33376, 35462, 36505, 40528, 41720, 50660, 58408, 66640, 70924, 73010, 81056, 83440, 88655, 101320, 116816, 124117, 133280, 141848, 146020, 166880, 177310, 202640, 233632, 248234, 283696, 292040, 354620, 405280, 496468, 567392, 584080, 620585, 709240, 992936, 1168160, 1241170, 1418480, 1985872, 2482340, 2836960, 3971744, 4964680, 9929360, 19858720]

約数ペア:

[(1, 19858720), (2, 9929360), (4, 4964680), (5, 3971744), (7, 2836960), (8, 2482340), (10, 1985872), (14, 1418480), (16, 1241170), (17, 1168160), (20, 992936), (28, 709240), (32, 620585), (34, 584080), (35, 567392), (40, 496468), (49, 405280), (56, 354620), (68, 292040), (70, 283696), (80, 248234), (85, 233632), (98, 202640), (112, 177310), (119, 166880), (136, 146020), (140, 141848), (149, 133280), (160, 124117), (170, 116816), (196, 101320), (224, 88655), (238, 83440), (245, 81056), (272, 73010), (280, 70924), (298, 66640), (340, 58408), (392, 50660), (476, 41720), (490, 40528), (544, 36505), (560, 35462), (595, 33376), (596, 33320), (680, 29204), (745, 26656), (784, 25330), (833, 23840), (952, 20860), (980, 20264), (1043, 19040), (1120, 17731), (1190, 16688), (1192, 16660), (1360, 14602), (1490, 13328), (1568, 12665), (1666, 11920), (1904, 10430), (1960, 10132), (2086, 9520), (2380, 8344), (2384, 8330), (2533, 7840), (2720, 7301), (2980, 6664), (3332, 5960), (3808, 5215), (3920, 5066), (4165, 4768), (4172, 4760)]