28072720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26993}}^1$

素因数の和:27019

約数の個数: 40

約数和(自身を含む): 70292376

約数和(自身を除く): 42219656

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 26993, 53986, 107972, 134965, 215944, 269930, 350909, 431888, 539860, 701818, 1079720, 1403636, 1754545, 2159440, 2807272, 3509090, 5614544, 7018180, 14036360, 28072720]

約数ペア:

[(1, 28072720), (2, 14036360), (4, 7018180), (5, 5614544), (8, 3509090), (10, 2807272), (13, 2159440), (16, 1754545), (20, 1403636), (26, 1079720), (40, 701818), (52, 539860), (65, 431888), (80, 350909), (104, 269930), (130, 215944), (208, 134965), (260, 107972), (520, 53986), (1040, 26993)]