21966406

素因数分解:

$2^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:146

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 21579194

約数列:

[1, 2, 7, 11, 14, 22, 41, 49, 71, 77, 82, 98, 142, 154, 287, 343, 451, 497, 539, 574, 686, 781, 902, 994, 1078, 1562, 2009, 2911, 3157, 3479, 3773, 4018, 5467, 5822, 6314, 6958, 7546, 10934, 14063, 20377, 22099, 24353, 28126, 32021, 38269, 40754, 44198, 48706, 64042, 76538, 142639, 154693, 224147, 267883, 285278, 309386, 448294, 535766, 998473, 1569029, 1996946, 3138058, 10983203, 21966406]

約数ペア:

[(1, 21966406), (2, 10983203), (7, 3138058), (11, 1996946), (14, 1569029), (22, 998473), (41, 535766), (49, 448294), (71, 309386), (77, 285278), (82, 267883), (98, 224147), (142, 154693), (154, 142639), (287, 76538), (343, 64042), (451, 48706), (497, 44198), (539, 40754), (574, 38269), (686, 32021), (781, 28126), (902, 24353), (994, 22099), (1078, 20377), (1562, 14063), (2009, 10934), (2911, 7546), (3157, 6958), (3479, 6314), (3773, 5822), (4018, 5467)]