1965965440

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1\times {\mathrm{503}}^1$

素因数の和:750

約数の個数: 128

約数和(自身を含む): 4885816320

約数和(自身を除く): 2919850880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 197, 248, 310, 320, 394, 496, 503, 620, 640, 788, 985, 992, 1006, 1240, 1576, 1970, 1984, 2012, 2480, 2515, 3152, 3940, 3968, 4024, 4960, 5030, 6107, 6304, 7880, 8048, 9920, 10060, 12214, 12608, 15593, 15760, 16096, 19840, 20120, 24428, 25216, 30535, 31186, 31520, 32192, 40240, 48856, 61070, 62372, 63040, 64384, 77965, 80480, 97712, 99091, 122140, 124744, 126080, 155930, 160960, 195424, 198182, 244280, 249488, 311860, 321920, 390848, 396364, 488560, 495455, 498976, 623720, 781696, 792728, 977120, 990910, 997952, 1247440, 1585456, 1954240, 1981820, 1995904, 2494880, 3071821, 3170912, 3908480, 3963640, 4989760, 6143642, 6341824, 7927280, 9979520, 12287284, 12683648, 15359105, 15854560, 24574568, 30718210, 31709120, 49149136, 61436420, 63418240, 98298272, 122872840, 196596544, 245745680, 393193088, 491491360, 982982720, 1965965440]

約数ペア:

[(1, 1965965440), (2, 982982720), (4, 491491360), (5, 393193088), (8, 245745680), (10, 196596544), (16, 122872840), (20, 98298272), (31, 63418240), (32, 61436420), (40, 49149136), (62, 31709120), (64, 30718210), (80, 24574568), (124, 15854560), (128, 15359105), (155, 12683648), (160, 12287284), (197, 9979520), (248, 7927280), (310, 6341824), (320, 6143642), (394, 4989760), (496, 3963640), (503, 3908480), (620, 3170912), (640, 3071821), (788, 2494880), (985, 1995904), (992, 1981820), (1006, 1954240), (1240, 1585456), (1576, 1247440), (1970, 997952), (1984, 990910), (2012, 977120), (2480, 792728), (2515, 781696), (3152, 623720), (3940, 498976), (3968, 495455), (4024, 488560), (4960, 396364), (5030, 390848), (6107, 321920), (6304, 311860), (7880, 249488), (8048, 244280), (9920, 198182), (10060, 195424), (12214, 160960), (12608, 155930), (15593, 126080), (15760, 124744), (16096, 122140), (19840, 99091), (20120, 97712), (24428, 80480), (25216, 77965), (30535, 64384), (31186, 63040), (31520, 62372), (32192, 61070), (40240, 48856)]