20721330

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1061}}^1$

素因数の和:1112

約数の個数: 96

約数和(自身を含む): 63618048

約数和(自身を除く): 42896718

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 31, 35, 42, 45, 62, 63, 70, 90, 93, 105, 126, 155, 186, 210, 217, 279, 310, 315, 434, 465, 558, 630, 651, 930, 1061, 1085, 1302, 1395, 1953, 2122, 2170, 2790, 3183, 3255, 3906, 5305, 6366, 6510, 7427, 9549, 9765, 10610, 14854, 15915, 19098, 19530, 22281, 31830, 32891, 37135, 44562, 47745, 65782, 66843, 74270, 95490, 98673, 111405, 133686, 164455, 197346, 222810, 230237, 296019, 328910, 334215, 460474, 493365, 592038, 668430, 690711, 986730, 1151185, 1381422, 1480095, 2072133, 2302370, 2960190, 3453555, 4144266, 6907110, 10360665, 20721330]

約数ペア:

[(1, 20721330), (2, 10360665), (3, 6907110), (5, 4144266), (6, 3453555), (7, 2960190), (9, 2302370), (10, 2072133), (14, 1480095), (15, 1381422), (18, 1151185), (21, 986730), (30, 690711), (31, 668430), (35, 592038), (42, 493365), (45, 460474), (62, 334215), (63, 328910), (70, 296019), (90, 230237), (93, 222810), (105, 197346), (126, 164455), (155, 133686), (186, 111405), (210, 98673), (217, 95490), (279, 74270), (310, 66843), (315, 65782), (434, 47745), (465, 44562), (558, 37135), (630, 32891), (651, 31830), (930, 22281), (1061, 19530), (1085, 19098), (1302, 15915), (1395, 14854), (1953, 10610), (2122, 9765), (2170, 9549), (2790, 7427), (3183, 6510), (3255, 6366), (3906, 5305)]