20789964180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{604711}}^1$

素因数の和:604917

約数の個数: 72

約数和(自身を含む): 63393168384

約数和(自身を除く): 42603204204

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 191, 382, 573, 764, 955, 1146, 1719, 1910, 2292, 2865, 3438, 3820, 5730, 6876, 8595, 11460, 17190, 34380, 604711, 1209422, 1814133, 2418844, 3023555, 3628266, 5442399, 6047110, 7256532, 9070665, 10884798, 12094220, 18141330, 21769596, 27211995, 36282660, 54423990, 108847980, 115499801, 230999602, 346499403, 461999204, 577499005, 692998806, 1039498209, 1154998010, 1385997612, 1732497015, 2078996418, 2309996020, 3464994030, 4157992836, 5197491045, 6929988060, 10394982090, 20789964180]

約数ペア:

[(1, 20789964180), (2, 10394982090), (3, 6929988060), (4, 5197491045), (5, 4157992836), (6, 3464994030), (9, 2309996020), (10, 2078996418), (12, 1732497015), (15, 1385997612), (18, 1154998010), (20, 1039498209), (30, 692998806), (36, 577499005), (45, 461999204), (60, 346499403), (90, 230999602), (180, 115499801), (191, 108847980), (382, 54423990), (573, 36282660), (764, 27211995), (955, 21769596), (1146, 18141330), (1719, 12094220), (1910, 10884798), (2292, 9070665), (2865, 7256532), (3438, 6047110), (3820, 5442399), (5730, 3628266), (6876, 3023555), (8595, 2418844), (11460, 1814133), (17190, 1209422), (34380, 604711)]