18714540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23993}}^1$

素因数の和:24018

約数の個数: 48

約数和(自身を含む): 56433888

約数和(自身を除く): 37719348

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 23993, 47986, 71979, 95972, 119965, 143958, 239930, 287916, 311909, 359895, 479860, 623818, 719790, 935727, 1247636, 1439580, 1559545, 1871454, 3119090, 3742908, 4678635, 6238180, 9357270, 18714540]

約数ペア:

[(1, 18714540), (2, 9357270), (3, 6238180), (4, 4678635), (5, 3742908), (6, 3119090), (10, 1871454), (12, 1559545), (13, 1439580), (15, 1247636), (20, 935727), (26, 719790), (30, 623818), (39, 479860), (52, 359895), (60, 311909), (65, 287916), (78, 239930), (130, 143958), (156, 119965), (195, 95972), (260, 71979), (390, 47986), (780, 23993)]