128460280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{613}}^1$

素因数の和:681

約数の個数: 96

約数和(自身を含む): 323602560

約数和(自身を除く): 195142280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 169, 248, 260, 310, 338, 403, 520, 613, 620, 676, 806, 845, 1226, 1240, 1352, 1612, 1690, 2015, 2452, 3065, 3224, 3380, 4030, 4904, 5239, 6130, 6760, 7969, 8060, 10478, 12260, 15938, 16120, 19003, 20956, 24520, 26195, 31876, 38006, 39845, 41912, 52390, 63752, 76012, 79690, 95015, 103597, 104780, 152024, 159380, 190030, 207194, 209560, 247039, 318760, 380060, 414388, 494078, 517985, 760120, 828776, 988156, 1035970, 1235195, 1976312, 2071940, 2470390, 3211507, 4143880, 4940780, 6423014, 9881560, 12846028, 16057535, 25692056, 32115070, 64230140, 128460280]

約数ペア:

[(1, 128460280), (2, 64230140), (4, 32115070), (5, 25692056), (8, 16057535), (10, 12846028), (13, 9881560), (20, 6423014), (26, 4940780), (31, 4143880), (40, 3211507), (52, 2470390), (62, 2071940), (65, 1976312), (104, 1235195), (124, 1035970), (130, 988156), (155, 828776), (169, 760120), (248, 517985), (260, 494078), (310, 414388), (338, 380060), (403, 318760), (520, 247039), (613, 209560), (620, 207194), (676, 190030), (806, 159380), (845, 152024), (1226, 104780), (1240, 103597), (1352, 95015), (1612, 79690), (1690, 76012), (2015, 63752), (2452, 52390), (3065, 41912), (3224, 39845), (3380, 38006), (4030, 31876), (4904, 26195), (5239, 24520), (6130, 20956), (6760, 19003), (7969, 16120), (8060, 15938), (10478, 12260)]