21205291224

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{307537}}^1$

素因数の和:307589

約数の個数: 96

約数和(自身を含む): 60781810320

約数和(自身を除く): 39576519096

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 17, 24, 26, 34, 39, 51, 52, 68, 78, 102, 104, 136, 156, 169, 204, 221, 312, 338, 408, 442, 507, 663, 676, 884, 1014, 1326, 1352, 1768, 2028, 2652, 2873, 4056, 5304, 5746, 8619, 11492, 17238, 22984, 34476, 68952, 307537, 615074, 922611, 1230148, 1845222, 2460296, 3690444, 3997981, 5228129, 7380888, 7995962, 10456258, 11993943, 15684387, 15991924, 20912516, 23987886, 31368774, 31983848, 41825032, 47975772, 51973753, 62737548, 67965677, 95951544, 103947506, 125475096, 135931354, 155921259, 203897031, 207895012, 271862708, 311842518, 407794062, 415790024, 543725416, 623685036, 815588124, 883553801, 1247370072, 1631176248, 1767107602, 2650661403, 3534215204, 5301322806, 7068430408, 10602645612, 21205291224]

約数ペア:

[(1, 21205291224), (2, 10602645612), (3, 7068430408), (4, 5301322806), (6, 3534215204), (8, 2650661403), (12, 1767107602), (13, 1631176248), (17, 1247370072), (24, 883553801), (26, 815588124), (34, 623685036), (39, 543725416), (51, 415790024), (52, 407794062), (68, 311842518), (78, 271862708), (102, 207895012), (104, 203897031), (136, 155921259), (156, 135931354), (169, 125475096), (204, 103947506), (221, 95951544), (312, 67965677), (338, 62737548), (408, 51973753), (442, 47975772), (507, 41825032), (663, 31983848), (676, 31368774), (884, 23987886), (1014, 20912516), (1326, 15991924), (1352, 15684387), (1768, 11993943), (2028, 10456258), (2652, 7995962), (2873, 7380888), (4056, 5228129), (5304, 3997981), (5746, 3690444), (8619, 2460296), (11492, 1845222), (17238, 1230148), (22984, 922611), (34476, 615074), (68952, 307537)]