28970820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1$

素因数の和:274

約数の個数: 144

約数和(自身を含む): 95135040

約数和(自身を除く): 66164220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 43, 45, 57, 60, 76, 86, 90, 95, 114, 129, 171, 172, 180, 190, 197, 215, 228, 258, 285, 342, 380, 387, 394, 430, 516, 570, 591, 645, 684, 774, 788, 817, 855, 860, 985, 1140, 1182, 1290, 1548, 1634, 1710, 1773, 1935, 1970, 2364, 2451, 2580, 2955, 3268, 3420, 3546, 3743, 3870, 3940, 4085, 4902, 5910, 7092, 7353, 7486, 7740, 8170, 8471, 8865, 9804, 11229, 11820, 12255, 14706, 14972, 16340, 16942, 17730, 18715, 22458, 24510, 25413, 29412, 33687, 33884, 35460, 36765, 37430, 42355, 44916, 49020, 50826, 56145, 67374, 73530, 74860, 76239, 84710, 101652, 112290, 127065, 134748, 147060, 152478, 160949, 168435, 169420, 224580, 254130, 304956, 321898, 336870, 381195, 482847, 508260, 643796, 673740, 762390, 804745, 965694, 1448541, 1524780, 1609490, 1931388, 2414235, 2897082, 3218980, 4828470, 5794164, 7242705, 9656940, 14485410, 28970820]

約数ペア:

[(1, 28970820), (2, 14485410), (3, 9656940), (4, 7242705), (5, 5794164), (6, 4828470), (9, 3218980), (10, 2897082), (12, 2414235), (15, 1931388), (18, 1609490), (19, 1524780), (20, 1448541), (30, 965694), (36, 804745), (38, 762390), (43, 673740), (45, 643796), (57, 508260), (60, 482847), (76, 381195), (86, 336870), (90, 321898), (95, 304956), (114, 254130), (129, 224580), (171, 169420), (172, 168435), (180, 160949), (190, 152478), (197, 147060), (215, 134748), (228, 127065), (258, 112290), (285, 101652), (342, 84710), (380, 76239), (387, 74860), (394, 73530), (430, 67374), (516, 56145), (570, 50826), (591, 49020), (645, 44916), (684, 42355), (774, 37430), (788, 36765), (817, 35460), (855, 33884), (860, 33687), (985, 29412), (1140, 25413), (1182, 24510), (1290, 22458), (1548, 18715), (1634, 17730), (1710, 16942), (1773, 16340), (1935, 14972), (1970, 14706), (2364, 12255), (2451, 11820), (2580, 11229), (2955, 9804), (3268, 8865), (3420, 8471), (3546, 8170), (3743, 7740), (3870, 7486), (3940, 7353), (4085, 7092), (4902, 5910)]