87990444

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{653}}^1$

素因数の和:879

約数の個数: 72

約数和(自身を含む): 235675440

約数和(自身を除く): 147684996

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 197, 228, 342, 394, 591, 653, 684, 788, 1182, 1306, 1773, 1959, 2364, 2612, 3546, 3743, 3918, 5877, 7092, 7486, 7836, 11229, 11754, 12407, 14972, 22458, 23508, 24814, 33687, 37221, 44916, 49628, 67374, 74442, 111663, 128641, 134748, 148884, 223326, 257282, 385923, 446652, 514564, 771846, 1157769, 1543692, 2315538, 2444179, 4631076, 4888358, 7332537, 9776716, 14665074, 21997611, 29330148, 43995222, 87990444]

約数ペア:

[(1, 87990444), (2, 43995222), (3, 29330148), (4, 21997611), (6, 14665074), (9, 9776716), (12, 7332537), (18, 4888358), (19, 4631076), (36, 2444179), (38, 2315538), (57, 1543692), (76, 1157769), (114, 771846), (171, 514564), (197, 446652), (228, 385923), (342, 257282), (394, 223326), (591, 148884), (653, 134748), (684, 128641), (788, 111663), (1182, 74442), (1306, 67374), (1773, 49628), (1959, 44916), (2364, 37221), (2612, 33687), (3546, 24814), (3743, 23508), (3918, 22458), (5877, 14972), (7092, 12407), (7486, 11754), (7836, 11229)]