21195270

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{191}}^1$

素因数の和:347

約数の個数: 80

約数和(自身を含む): 57708288

約数和(自身を除く): 36513018

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 137, 162, 191, 270, 274, 382, 405, 411, 573, 685, 810, 822, 955, 1146, 1233, 1370, 1719, 1910, 2055, 2466, 2865, 3438, 3699, 4110, 5157, 5730, 6165, 7398, 8595, 10314, 11097, 12330, 15471, 17190, 18495, 22194, 25785, 26167, 30942, 36990, 51570, 52334, 55485, 77355, 78501, 110970, 130835, 154710, 157002, 235503, 261670, 392505, 471006, 706509, 785010, 1177515, 1413018, 2119527, 2355030, 3532545, 4239054, 7065090, 10597635, 21195270]

約数ペア:

[(1, 21195270), (2, 10597635), (3, 7065090), (5, 4239054), (6, 3532545), (9, 2355030), (10, 2119527), (15, 1413018), (18, 1177515), (27, 785010), (30, 706509), (45, 471006), (54, 392505), (81, 261670), (90, 235503), (135, 157002), (137, 154710), (162, 130835), (191, 110970), (270, 78501), (274, 77355), (382, 55485), (405, 52334), (411, 51570), (573, 36990), (685, 30942), (810, 26167), (822, 25785), (955, 22194), (1146, 18495), (1233, 17190), (1370, 15471), (1719, 12330), (1910, 11097), (2055, 10314), (2466, 8595), (2865, 7398), (3438, 6165), (3699, 5730), (4110, 5157)]