20402550980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{599}}^1\times {\mathrm{1091}}^1$

素因数の和:1929

約数の個数: 96

約数和(自身を含む): 49312972800

約数和(自身を除く): 28910421820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 223, 446, 599, 892, 1091, 1115, 1198, 1561, 2182, 2230, 2396, 2995, 3122, 4193, 4364, 4460, 5455, 5990, 6244, 7637, 7805, 8386, 10910, 11980, 15274, 15610, 16772, 20965, 21820, 30548, 31220, 38185, 41930, 76370, 83860, 133577, 152740, 243293, 267154, 486586, 534308, 653509, 667885, 935039, 973172, 1216465, 1307018, 1335770, 1703051, 1870078, 2432930, 2614036, 2671540, 3267545, 3406102, 3740156, 4574563, 4675195, 4865860, 6535090, 6812204, 8515255, 9149126, 9350390, 13070180, 17030510, 18298252, 18700780, 22872815, 34061020, 45745630, 91491260, 145732507, 291465014, 582930028, 728662535, 1020127549, 1457325070, 2040255098, 2914650140, 4080510196, 5100637745, 10201275490, 20402550980]

約数ペア:

[(1, 20402550980), (2, 10201275490), (4, 5100637745), (5, 4080510196), (7, 2914650140), (10, 2040255098), (14, 1457325070), (20, 1020127549), (28, 728662535), (35, 582930028), (70, 291465014), (140, 145732507), (223, 91491260), (446, 45745630), (599, 34061020), (892, 22872815), (1091, 18700780), (1115, 18298252), (1198, 17030510), (1561, 13070180), (2182, 9350390), (2230, 9149126), (2396, 8515255), (2995, 6812204), (3122, 6535090), (4193, 4865860), (4364, 4675195), (4460, 4574563), (5455, 3740156), (5990, 3406102), (6244, 3267545), (7637, 2671540), (7805, 2614036), (8386, 2432930), (10910, 1870078), (11980, 1703051), (15274, 1335770), (15610, 1307018), (16772, 1216465), (20965, 973172), (21820, 935039), (30548, 667885), (31220, 653509), (38185, 534308), (41930, 486586), (76370, 267154), (83860, 243293), (133577, 152740)]