12157720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{941}}^1$

素因数の和:988

約数の個数: 64

約数和(自身を含む): 30520800

約数和(自身を除く): 18363080

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 68, 76, 85, 95, 136, 152, 170, 190, 323, 340, 380, 646, 680, 760, 941, 1292, 1615, 1882, 2584, 3230, 3764, 4705, 6460, 7528, 9410, 12920, 15997, 17879, 18820, 31994, 35758, 37640, 63988, 71516, 79985, 89395, 127976, 143032, 159970, 178790, 303943, 319940, 357580, 607886, 639880, 715160, 1215772, 1519715, 2431544, 3039430, 6078860, 12157720]

約数ペア:

[(1, 12157720), (2, 6078860), (4, 3039430), (5, 2431544), (8, 1519715), (10, 1215772), (17, 715160), (19, 639880), (20, 607886), (34, 357580), (38, 319940), (40, 303943), (68, 178790), (76, 159970), (85, 143032), (95, 127976), (136, 89395), (152, 79985), (170, 71516), (190, 63988), (323, 37640), (340, 35758), (380, 31994), (646, 18820), (680, 17879), (760, 15997), (941, 12920), (1292, 9410), (1615, 7528), (1882, 6460), (2584, 4705), (3230, 3764)]