20797290

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1$

素因数の和:253

約数の個数: 128

約数和(自身を含む): 61585920

約数和(自身を除く): 40788630

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 23, 27, 30, 34, 45, 46, 51, 54, 69, 85, 90, 102, 115, 135, 138, 153, 170, 197, 207, 230, 255, 270, 306, 345, 391, 394, 414, 459, 510, 591, 621, 690, 765, 782, 918, 985, 1035, 1173, 1182, 1242, 1530, 1773, 1955, 1970, 2070, 2295, 2346, 2955, 3105, 3349, 3519, 3546, 3910, 4531, 4590, 5319, 5865, 5910, 6210, 6698, 7038, 8865, 9062, 10047, 10557, 10638, 11730, 13593, 16745, 17595, 17730, 20094, 21114, 22655, 26595, 27186, 30141, 33490, 35190, 40779, 45310, 50235, 52785, 53190, 60282, 67965, 77027, 81558, 90423, 100470, 105570, 122337, 135930, 150705, 154054, 180846, 203895, 231081, 244674, 301410, 385135, 407790, 452115, 462162, 611685, 693243, 770270, 904230, 1155405, 1223370, 1386486, 2079729, 2310810, 3466215, 4159458, 6932430, 10398645, 20797290]

約数ペア:

[(1, 20797290), (2, 10398645), (3, 6932430), (5, 4159458), (6, 3466215), (9, 2310810), (10, 2079729), (15, 1386486), (17, 1223370), (18, 1155405), (23, 904230), (27, 770270), (30, 693243), (34, 611685), (45, 462162), (46, 452115), (51, 407790), (54, 385135), (69, 301410), (85, 244674), (90, 231081), (102, 203895), (115, 180846), (135, 154054), (138, 150705), (153, 135930), (170, 122337), (197, 105570), (207, 100470), (230, 90423), (255, 81558), (270, 77027), (306, 67965), (345, 60282), (391, 53190), (394, 52785), (414, 50235), (459, 45310), (510, 40779), (591, 35190), (621, 33490), (690, 30141), (765, 27186), (782, 26595), (918, 22655), (985, 21114), (1035, 20094), (1173, 17730), (1182, 17595), (1242, 16745), (1530, 13593), (1773, 11730), (1955, 10638), (1970, 10557), (2070, 10047), (2295, 9062), (2346, 8865), (2955, 7038), (3105, 6698), (3349, 6210), (3519, 5910), (3546, 5865), (3910, 5319), (4531, 4590)]