28021980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{487}}^1$

素因数の和:643

約数の個数: 96

約数和(自身を含む): 90510336

約数和(自身を除く): 62488356

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 137, 140, 210, 274, 411, 420, 487, 548, 685, 822, 959, 974, 1370, 1461, 1644, 1918, 1948, 2055, 2435, 2740, 2877, 2922, 3409, 3836, 4110, 4795, 4870, 5754, 5844, 6818, 7305, 8220, 9590, 9740, 10227, 11508, 13636, 14385, 14610, 17045, 19180, 20454, 28770, 29220, 34090, 40908, 51135, 57540, 66719, 68180, 102270, 133438, 200157, 204540, 266876, 333595, 400314, 467033, 667190, 800628, 934066, 1000785, 1334380, 1401099, 1868132, 2001570, 2335165, 2802198, 4003140, 4670330, 5604396, 7005495, 9340660, 14010990, 28021980]

約数ペア:

[(1, 28021980), (2, 14010990), (3, 9340660), (4, 7005495), (5, 5604396), (6, 4670330), (7, 4003140), (10, 2802198), (12, 2335165), (14, 2001570), (15, 1868132), (20, 1401099), (21, 1334380), (28, 1000785), (30, 934066), (35, 800628), (42, 667190), (60, 467033), (70, 400314), (84, 333595), (105, 266876), (137, 204540), (140, 200157), (210, 133438), (274, 102270), (411, 68180), (420, 66719), (487, 57540), (548, 51135), (685, 40908), (822, 34090), (959, 29220), (974, 28770), (1370, 20454), (1461, 19180), (1644, 17045), (1918, 14610), (1948, 14385), (2055, 13636), (2435, 11508), (2740, 10227), (2877, 9740), (2922, 9590), (3409, 8220), (3836, 7305), (4110, 6818), (4795, 5844), (4870, 5754)]