977895940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{149}}^1\times {\mathrm{181}}^1$

素因数の和:390

約数の個数: 144

約数和(自身を含む): 2483535600

約数和(自身を除く): 1505639660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 49, 70, 74, 98, 140, 148, 149, 181, 185, 196, 245, 259, 298, 362, 370, 490, 518, 596, 724, 740, 745, 905, 980, 1036, 1043, 1267, 1295, 1490, 1810, 1813, 2086, 2534, 2590, 2980, 3620, 3626, 4172, 5068, 5180, 5215, 5513, 6335, 6697, 7252, 7301, 8869, 9065, 10430, 11026, 12670, 13394, 14602, 17738, 18130, 20860, 22052, 25340, 26788, 26969, 27565, 29204, 33485, 35476, 36260, 36505, 38591, 44345, 46879, 53938, 55130, 66970, 73010, 77182, 88690, 93758, 107876, 110260, 133940, 134845, 146020, 154364, 177380, 187516, 188783, 192955, 234395, 269690, 270137, 328153, 377566, 385910, 468790, 539380, 540274, 656306, 755132, 771820, 937580, 943915, 997853, 1080548, 1312612, 1321481, 1350685, 1640765, 1887830, 1995706, 2642962, 2701370, 3281530, 3775660, 3991412, 4989265, 5285924, 5402740, 6563060, 6607405, 6984971, 9978530, 13214810, 13969942, 19957060, 26429620, 27939884, 34924855, 48894797, 69849710, 97789594, 139699420, 195579188, 244473985, 488947970, 977895940]

約数ペア:

[(1, 977895940), (2, 488947970), (4, 244473985), (5, 195579188), (7, 139699420), (10, 97789594), (14, 69849710), (20, 48894797), (28, 34924855), (35, 27939884), (37, 26429620), (49, 19957060), (70, 13969942), (74, 13214810), (98, 9978530), (140, 6984971), (148, 6607405), (149, 6563060), (181, 5402740), (185, 5285924), (196, 4989265), (245, 3991412), (259, 3775660), (298, 3281530), (362, 2701370), (370, 2642962), (490, 1995706), (518, 1887830), (596, 1640765), (724, 1350685), (740, 1321481), (745, 1312612), (905, 1080548), (980, 997853), (1036, 943915), (1043, 937580), (1267, 771820), (1295, 755132), (1490, 656306), (1810, 540274), (1813, 539380), (2086, 468790), (2534, 385910), (2590, 377566), (2980, 328153), (3620, 270137), (3626, 269690), (4172, 234395), (5068, 192955), (5180, 188783), (5215, 187516), (5513, 177380), (6335, 154364), (6697, 146020), (7252, 134845), (7301, 133940), (8869, 110260), (9065, 107876), (10430, 93758), (11026, 88690), (12670, 77182), (13394, 73010), (14602, 66970), (17738, 55130), (18130, 53938), (20860, 46879), (22052, 44345), (25340, 38591), (26788, 36505), (26969, 36260), (27565, 35476), (29204, 33485)]