128895520

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1999}}^1$

素因数の和:2058

約数の個数: 96

約数和(自身を含む): 338688000

約数和(自身を除く): 209792480

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 65, 80, 104, 124, 130, 155, 160, 208, 248, 260, 310, 403, 416, 496, 520, 620, 806, 992, 1040, 1240, 1612, 1999, 2015, 2080, 2480, 3224, 3998, 4030, 4960, 6448, 7996, 8060, 9995, 12896, 15992, 16120, 19990, 25987, 31984, 32240, 39980, 51974, 61969, 63968, 64480, 79960, 103948, 123938, 129935, 159920, 207896, 247876, 259870, 309845, 319840, 415792, 495752, 519740, 619690, 805597, 831584, 991504, 1039480, 1239380, 1611194, 1983008, 2078960, 2478760, 3222388, 4027985, 4157920, 4957520, 6444776, 8055970, 9915040, 12889552, 16111940, 25779104, 32223880, 64447760, 128895520]

約数ペア:

[(1, 128895520), (2, 64447760), (4, 32223880), (5, 25779104), (8, 16111940), (10, 12889552), (13, 9915040), (16, 8055970), (20, 6444776), (26, 4957520), (31, 4157920), (32, 4027985), (40, 3222388), (52, 2478760), (62, 2078960), (65, 1983008), (80, 1611194), (104, 1239380), (124, 1039480), (130, 991504), (155, 831584), (160, 805597), (208, 619690), (248, 519740), (260, 495752), (310, 415792), (403, 319840), (416, 309845), (496, 259870), (520, 247876), (620, 207896), (806, 159920), (992, 129935), (1040, 123938), (1240, 103948), (1612, 79960), (1999, 64480), (2015, 63968), (2080, 61969), (2480, 51974), (3224, 39980), (3998, 32240), (4030, 31984), (4960, 25987), (6448, 19990), (7996, 16120), (8060, 15992), (9995, 12896)]