204877980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{7639}}^1$

素因数の和:7803

約数の個数: 72

約数和(自身を含む): 625716000

約数和(自身を除く): 420838020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 149, 180, 298, 447, 596, 745, 894, 1341, 1490, 1788, 2235, 2682, 2980, 4470, 5364, 6705, 7639, 8940, 13410, 15278, 22917, 26820, 30556, 38195, 45834, 68751, 76390, 91668, 114585, 137502, 152780, 229170, 275004, 343755, 458340, 687510, 1138211, 1375020, 2276422, 3414633, 4552844, 5691055, 6829266, 10243899, 11382110, 13658532, 17073165, 20487798, 22764220, 34146330, 40975596, 51219495, 68292660, 102438990, 204877980]

約数ペア:

[(1, 204877980), (2, 102438990), (3, 68292660), (4, 51219495), (5, 40975596), (6, 34146330), (9, 22764220), (10, 20487798), (12, 17073165), (15, 13658532), (18, 11382110), (20, 10243899), (30, 6829266), (36, 5691055), (45, 4552844), (60, 3414633), (90, 2276422), (149, 1375020), (180, 1138211), (298, 687510), (447, 458340), (596, 343755), (745, 275004), (894, 229170), (1341, 152780), (1490, 137502), (1788, 114585), (2235, 91668), (2682, 76390), (2980, 68751), (4470, 45834), (5364, 38195), (6705, 30556), (7639, 26820), (8940, 22917), (13410, 15278)]