278564580

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{221083}}^1$

素因数の和:221105

約数の個数: 72

約数和(自身を含む): 965694912

約数和(自身を除く): 687130332

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, 221083, 442166, 663249, 884332, 1105415, 1326498, 1547581, 1989747, 2210830, 2652996, 3095162, 3316245, 3979494, 4421660, 4642743, 6190324, 6632490, 7737905, 7958988, 9285486, 9948735, 13264980, 13928229, 15475810, 18570972, 19897470, 23213715, 27856458, 30951620, 39794940, 46427430, 55712916, 69641145, 92854860, 139282290, 278564580]

約数ペア:

[(1, 278564580), (2, 139282290), (3, 92854860), (4, 69641145), (5, 55712916), (6, 46427430), (7, 39794940), (9, 30951620), (10, 27856458), (12, 23213715), (14, 19897470), (15, 18570972), (18, 15475810), (20, 13928229), (21, 13264980), (28, 9948735), (30, 9285486), (35, 7958988), (36, 7737905), (42, 6632490), (45, 6190324), (60, 4642743), (63, 4421660), (70, 3979494), (84, 3316245), (90, 3095162), (105, 2652996), (126, 2210830), (140, 1989747), (180, 1547581), (210, 1326498), (252, 1105415), (315, 884332), (420, 663249), (630, 442166), (1260, 221083)]