20078370

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^2$

素因数の和:288

約数の個数: 72

約数和(自身を含む): 56651868

約数和(自身を除く): 36573498

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 30, 39, 45, 65, 78, 90, 117, 130, 131, 195, 234, 262, 390, 393, 585, 655, 786, 1170, 1179, 1310, 1703, 1965, 2358, 3406, 3930, 5109, 5895, 8515, 10218, 11790, 15327, 17030, 17161, 25545, 30654, 34322, 51090, 51483, 76635, 85805, 102966, 153270, 154449, 171610, 223093, 257415, 308898, 446186, 514830, 669279, 772245, 1115465, 1338558, 1544490, 2007837, 2230930, 3346395, 4015674, 6692790, 10039185, 20078370]

約数ペア:

[(1, 20078370), (2, 10039185), (3, 6692790), (5, 4015674), (6, 3346395), (9, 2230930), (10, 2007837), (13, 1544490), (15, 1338558), (18, 1115465), (26, 772245), (30, 669279), (39, 514830), (45, 446186), (65, 308898), (78, 257415), (90, 223093), (117, 171610), (130, 154449), (131, 153270), (195, 102966), (234, 85805), (262, 76635), (390, 51483), (393, 51090), (585, 34322), (655, 30654), (786, 25545), (1170, 17161), (1179, 17030), (1310, 15327), (1703, 11790), (1965, 10218), (2358, 8515), (3406, 5895), (3930, 5109)]