20142780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{241}}^1$

素因数の和:459

約数の個数: 96

約数和(自身を含む): 65049600

約数和(自身を除く): 44906820

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 199, 210, 241, 398, 420, 482, 597, 723, 796, 964, 995, 1194, 1205, 1393, 1446, 1687, 1990, 2388, 2410, 2786, 2892, 2985, 3374, 3615, 3980, 4179, 4820, 5061, 5572, 5970, 6748, 6965, 7230, 8358, 8435, 10122, 11940, 13930, 14460, 16716, 16870, 20244, 20895, 25305, 27860, 33740, 41790, 47959, 50610, 83580, 95918, 101220, 143877, 191836, 239795, 287754, 335713, 479590, 575508, 671426, 719385, 959180, 1007139, 1342852, 1438770, 1678565, 2014278, 2877540, 3357130, 4028556, 5035695, 6714260, 10071390, 20142780]

約数ペア:

[(1, 20142780), (2, 10071390), (3, 6714260), (4, 5035695), (5, 4028556), (6, 3357130), (7, 2877540), (10, 2014278), (12, 1678565), (14, 1438770), (15, 1342852), (20, 1007139), (21, 959180), (28, 719385), (30, 671426), (35, 575508), (42, 479590), (60, 335713), (70, 287754), (84, 239795), (105, 191836), (140, 143877), (199, 101220), (210, 95918), (241, 83580), (398, 50610), (420, 47959), (482, 41790), (597, 33740), (723, 27860), (796, 25305), (964, 20895), (995, 20244), (1194, 16870), (1205, 16716), (1393, 14460), (1446, 13930), (1687, 11940), (1990, 10122), (2388, 8435), (2410, 8358), (2786, 7230), (2892, 6965), (2985, 6748), (3374, 5970), (3615, 5572), (3980, 5061), (4179, 4820)]