21756588

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{163}}^1\times {\mathrm{227}}^1$

素因数の和:411

約数の個数: 72

約数和(自身を含む): 59677632

約数和(自身を除く): 37921044

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 147, 163, 196, 227, 294, 326, 454, 489, 588, 652, 681, 908, 978, 1141, 1362, 1589, 1956, 2282, 2724, 3178, 3423, 4564, 4767, 6356, 6846, 7987, 9534, 11123, 13692, 15974, 19068, 22246, 23961, 31948, 33369, 37001, 44492, 47922, 66738, 74002, 95844, 111003, 133476, 148004, 222006, 259007, 444012, 518014, 777021, 1036028, 1554042, 1813049, 3108084, 3626098, 5439147, 7252196, 10878294, 21756588]

約数ペア:

[(1, 21756588), (2, 10878294), (3, 7252196), (4, 5439147), (6, 3626098), (7, 3108084), (12, 1813049), (14, 1554042), (21, 1036028), (28, 777021), (42, 518014), (49, 444012), (84, 259007), (98, 222006), (147, 148004), (163, 133476), (196, 111003), (227, 95844), (294, 74002), (326, 66738), (454, 47922), (489, 44492), (588, 37001), (652, 33369), (681, 31948), (908, 23961), (978, 22246), (1141, 19068), (1362, 15974), (1589, 13692), (1956, 11123), (2282, 9534), (2724, 7987), (3178, 6846), (3423, 6356), (4564, 4767)]