78328640

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{991}}^1$

素因数の和:1040

約数の個数: 112

約数和(自身を含む): 211653120

約数和(自身を除く): 133324480

約数列:

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

約数ペア:

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