1331193760

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{639997}}^1$

素因数の和:640025

約数の個数: 48

約数和(自身を含む): 3386869416

約数和(自身を除く): 2055675656

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 639997, 1279994, 2559988, 3199985, 5119976, 6399970, 8319961, 10239952, 12799940, 16639922, 20479904, 25599880, 33279844, 41599805, 51199760, 66559688, 83199610, 102399520, 133119376, 166399220, 266238752, 332798440, 665596880, 1331193760]

約数ペア:

[(1, 1331193760), (2, 665596880), (4, 332798440), (5, 266238752), (8, 166399220), (10, 133119376), (13, 102399520), (16, 83199610), (20, 66559688), (26, 51199760), (32, 41599805), (40, 33279844), (52, 25599880), (65, 20479904), (80, 16639922), (104, 12799940), (130, 10239952), (160, 8319961), (208, 6399970), (260, 5119976), (416, 3199985), (520, 2559988), (1040, 1279994), (2080, 639997)]