21870585

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1$

素因数の和:175

約数の個数: 96

約数和(自身を含む): 46096128

約数和(自身を除く): 24225543

約数列:

[1, 3, 5, 9, 11, 15, 17, 23, 33, 45, 51, 55, 69, 85, 99, 113, 115, 153, 165, 187, 207, 253, 255, 339, 345, 391, 495, 561, 565, 759, 765, 935, 1017, 1035, 1173, 1243, 1265, 1683, 1695, 1921, 1955, 2277, 2599, 2805, 3519, 3729, 3795, 4301, 5085, 5763, 5865, 6215, 7797, 8415, 9605, 11187, 11385, 12903, 12995, 17289, 17595, 18645, 21131, 21505, 23391, 28589, 28815, 38709, 38985, 44183, 55935, 63393, 64515, 85767, 86445, 105655, 116955, 132549, 142945, 190179, 193545, 220915, 257301, 316965, 397647, 428835, 486013, 662745, 950895, 1286505, 1458039, 1988235, 2430065, 4374117, 7290195, 21870585]

約数ペア:

[(1, 21870585), (3, 7290195), (5, 4374117), (9, 2430065), (11, 1988235), (15, 1458039), (17, 1286505), (23, 950895), (33, 662745), (45, 486013), (51, 428835), (55, 397647), (69, 316965), (85, 257301), (99, 220915), (113, 193545), (115, 190179), (153, 142945), (165, 132549), (187, 116955), (207, 105655), (253, 86445), (255, 85767), (339, 64515), (345, 63393), (391, 55935), (495, 44183), (561, 38985), (565, 38709), (759, 28815), (765, 28589), (935, 23391), (1017, 21505), (1035, 21131), (1173, 18645), (1243, 17595), (1265, 17289), (1683, 12995), (1695, 12903), (1921, 11385), (1955, 11187), (2277, 9605), (2599, 8415), (2805, 7797), (3519, 6215), (3729, 5865), (3795, 5763), (4301, 5085)]