128669840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{307}}^1$

素因数の和:377

約数の個数: 120

約数和(自身を含む): 335478528

約数和(自身を除く): 206808688

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 169, 208, 248, 260, 307, 310, 338, 403, 496, 520, 614, 620, 676, 806, 845, 1040, 1228, 1240, 1352, 1535, 1612, 1690, 2015, 2456, 2480, 2704, 3070, 3224, 3380, 3991, 4030, 4912, 5239, 6140, 6448, 6760, 7982, 8060, 9517, 10478, 12280, 13520, 15964, 16120, 19034, 19955, 20956, 24560, 26195, 31928, 32240, 38068, 39910, 41912, 47585, 51883, 52390, 63856, 76136, 79820, 83824, 95170, 103766, 104780, 123721, 152272, 159640, 190340, 207532, 209560, 247442, 259415, 319280, 380680, 415064, 419120, 494884, 518830, 618605, 761360, 830128, 989768, 1037660, 1237210, 1608373, 1979536, 2075320, 2474420, 3216746, 4150640, 4948840, 6433492, 8041865, 9897680, 12866984, 16083730, 25733968, 32167460, 64334920, 128669840]

約数ペア:

[(1, 128669840), (2, 64334920), (4, 32167460), (5, 25733968), (8, 16083730), (10, 12866984), (13, 9897680), (16, 8041865), (20, 6433492), (26, 4948840), (31, 4150640), (40, 3216746), (52, 2474420), (62, 2075320), (65, 1979536), (80, 1608373), (104, 1237210), (124, 1037660), (130, 989768), (155, 830128), (169, 761360), (208, 618605), (248, 518830), (260, 494884), (307, 419120), (310, 415064), (338, 380680), (403, 319280), (496, 259415), (520, 247442), (614, 209560), (620, 207532), (676, 190340), (806, 159640), (845, 152272), (1040, 123721), (1228, 104780), (1240, 103766), (1352, 95170), (1535, 83824), (1612, 79820), (1690, 76136), (2015, 63856), (2456, 52390), (2480, 51883), (2704, 47585), (3070, 41912), (3224, 39910), (3380, 38068), (3991, 32240), (4030, 31928), (4912, 26195), (5239, 24560), (6140, 20956), (6448, 19955), (6760, 19034), (7982, 16120), (8060, 15964), (9517, 13520), (10478, 12280)]