21393455580

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16978933}}^1$

素因数の和:16978955

約数の個数: 72

約数和(自身を含む): 74163983712

約数和(自身を除く): 52770528132

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16978933, 33957866, 50936799, 67915732, 84894665, 101873598, 118852531, 152810397, 169789330, 203747196, 237705062, 254683995, 305620794, 339578660, 356557593, 475410124, 509367990, 594262655, 611241588, 713115186, 764051985, 1018735980, 1069672779, 1188525310, 1426230372, 1528103970, 1782787965, 2139345558, 2377050620, 3056207940, 3565575930, 4278691116, 5348363895, 7131151860, 10696727790, 21393455580]

約数ペア:

[(1, 21393455580), (2, 10696727790), (3, 7131151860), (4, 5348363895), (5, 4278691116), (6, 3565575930), (7, 3056207940), (9, 2377050620), (10, 2139345558), (12, 1782787965), (14, 1528103970), (15, 1426230372), (18, 1188525310), (20, 1069672779), (21, 1018735980), (28, 764051985), (30, 713115186), (35, 611241588), (36, 594262655), (42, 509367990), (45, 475410124), (60, 356557593), (63, 339578660), (70, 305620794), (84, 254683995), (90, 237705062), (105, 203747196), (126, 169789330), (140, 152810397), (180, 118852531), (210, 101873598), (252, 84894665), (315, 67915732), (420, 50936799), (630, 33957866), (1260, 16978933)]