156657280

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{991}}^1$

素因数の和:1042

約数の個数: 128

約数和(自身を含む): 424972800

約数和(自身を除く): 268315520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 32, 38, 40, 52, 64, 65, 76, 80, 95, 104, 128, 130, 152, 160, 190, 208, 247, 260, 304, 320, 380, 416, 494, 520, 608, 640, 760, 832, 988, 991, 1040, 1216, 1235, 1520, 1664, 1976, 1982, 2080, 2432, 2470, 3040, 3952, 3964, 4160, 4940, 4955, 6080, 7904, 7928, 8320, 9880, 9910, 12160, 12883, 15808, 15856, 18829, 19760, 19820, 25766, 31616, 31712, 37658, 39520, 39640, 51532, 63424, 64415, 75316, 79040, 79280, 94145, 103064, 126848, 128830, 150632, 158080, 158560, 188290, 206128, 244777, 257660, 301264, 317120, 376580, 412256, 489554, 515320, 602528, 634240, 753160, 824512, 979108, 1030640, 1205056, 1223885, 1506320, 1649024, 1958216, 2061280, 2410112, 2447770, 3012640, 3916432, 4122560, 4895540, 6025280, 7832864, 8245120, 9791080, 12050560, 15665728, 19582160, 31331456, 39164320, 78328640, 156657280]

約数ペア:

[(1, 156657280), (2, 78328640), (4, 39164320), (5, 31331456), (8, 19582160), (10, 15665728), (13, 12050560), (16, 9791080), (19, 8245120), (20, 7832864), (26, 6025280), (32, 4895540), (38, 4122560), (40, 3916432), (52, 3012640), (64, 2447770), (65, 2410112), (76, 2061280), (80, 1958216), (95, 1649024), (104, 1506320), (128, 1223885), (130, 1205056), (152, 1030640), (160, 979108), (190, 824512), (208, 753160), (247, 634240), (260, 602528), (304, 515320), (320, 489554), (380, 412256), (416, 376580), (494, 317120), (520, 301264), (608, 257660), (640, 244777), (760, 206128), (832, 188290), (988, 158560), (991, 158080), (1040, 150632), (1216, 128830), (1235, 126848), (1520, 103064), (1664, 94145), (1976, 79280), (1982, 79040), (2080, 75316), (2432, 64415), (2470, 63424), (3040, 51532), (3952, 39640), (3964, 39520), (4160, 37658), (4940, 31712), (4955, 31616), (6080, 25766), (7904, 19820), (7928, 19760), (8320, 18829), (9880, 15856), (9910, 15808), (12160, 12883)]