20419434640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{748513}}^1$

素因数の和:748568

約数の個数: 80

約数和(自身を含む): 53461863936

約数和(自身を除く): 33042429296

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 62, 80, 88, 110, 124, 155, 176, 220, 248, 310, 341, 440, 496, 620, 682, 880, 1240, 1364, 1705, 2480, 2728, 3410, 5456, 6820, 13640, 27280, 748513, 1497026, 2994052, 3742565, 5988104, 7485130, 8233643, 11976208, 14970260, 16467286, 23203903, 29940520, 32934572, 41168215, 46407806, 59881040, 65869144, 82336430, 92815612, 116019515, 131738288, 164672860, 185631224, 232039030, 255242933, 329345720, 371262448, 464078060, 510485866, 658691440, 928156120, 1020971732, 1276214665, 1856312240, 2041943464, 2552429330, 4083886928, 5104858660, 10209717320, 20419434640]

約数ペア:

[(1, 20419434640), (2, 10209717320), (4, 5104858660), (5, 4083886928), (8, 2552429330), (10, 2041943464), (11, 1856312240), (16, 1276214665), (20, 1020971732), (22, 928156120), (31, 658691440), (40, 510485866), (44, 464078060), (55, 371262448), (62, 329345720), (80, 255242933), (88, 232039030), (110, 185631224), (124, 164672860), (155, 131738288), (176, 116019515), (220, 92815612), (248, 82336430), (310, 65869144), (341, 59881040), (440, 46407806), (496, 41168215), (620, 32934572), (682, 29940520), (880, 23203903), (1240, 16467286), (1364, 14970260), (1705, 11976208), (2480, 8233643), (2728, 7485130), (3410, 5988104), (5456, 3742565), (6820, 2994052), (13640, 1497026), (27280, 748513)]