20446920

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1$

素因数の和:304

約数の個数: 192

約数和(自身を含む): 76068720

約数和(自身を除く): 55621800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 17, 18, 20, 24, 26, 30, 34, 36, 39, 40, 45, 51, 52, 60, 65, 68, 72, 78, 85, 90, 102, 104, 117, 120, 130, 136, 153, 156, 170, 180, 195, 204, 221, 234, 255, 257, 260, 306, 312, 340, 360, 390, 408, 442, 468, 510, 514, 520, 585, 612, 663, 680, 765, 771, 780, 884, 936, 1020, 1028, 1105, 1170, 1224, 1285, 1326, 1530, 1542, 1560, 1768, 1989, 2040, 2056, 2210, 2313, 2340, 2570, 2652, 3060, 3084, 3315, 3341, 3855, 3978, 4369, 4420, 4626, 4680, 5140, 5304, 6120, 6168, 6630, 6682, 7710, 7956, 8738, 8840, 9252, 9945, 10023, 10280, 11565, 13107, 13260, 13364, 15420, 15912, 16705, 17476, 18504, 19890, 20046, 21845, 23130, 26214, 26520, 26728, 30069, 30840, 33410, 34952, 39321, 39780, 40092, 43690, 46260, 50115, 52428, 56797, 60138, 65535, 66820, 78642, 79560, 80184, 87380, 92520, 100230, 104856, 113594, 120276, 131070, 133640, 150345, 157284, 170391, 174760, 196605, 200460, 227188, 240552, 262140, 283985, 300690, 314568, 340782, 393210, 400920, 454376, 511173, 524280, 567970, 601380, 681564, 786420, 851955, 1022346, 1135940, 1202760, 1363128, 1572840, 1703910, 2044692, 2271880, 2555865, 3407820, 4089384, 5111730, 6815640, 10223460, 20446920]

約数ペア:

[(1, 20446920), (2, 10223460), (3, 6815640), (4, 5111730), (5, 4089384), (6, 3407820), (8, 2555865), (9, 2271880), (10, 2044692), (12, 1703910), (13, 1572840), (15, 1363128), (17, 1202760), (18, 1135940), (20, 1022346), (24, 851955), (26, 786420), (30, 681564), (34, 601380), (36, 567970), (39, 524280), (40, 511173), (45, 454376), (51, 400920), (52, 393210), (60, 340782), (65, 314568), (68, 300690), (72, 283985), (78, 262140), (85, 240552), (90, 227188), (102, 200460), (104, 196605), (117, 174760), (120, 170391), (130, 157284), (136, 150345), (153, 133640), (156, 131070), (170, 120276), (180, 113594), (195, 104856), (204, 100230), (221, 92520), (234, 87380), (255, 80184), (257, 79560), (260, 78642), (306, 66820), (312, 65535), (340, 60138), (360, 56797), (390, 52428), (408, 50115), (442, 46260), (468, 43690), (510, 40092), (514, 39780), (520, 39321), (585, 34952), (612, 33410), (663, 30840), (680, 30069), (765, 26728), (771, 26520), (780, 26214), (884, 23130), (936, 21845), (1020, 20046), (1028, 19890), (1105, 18504), (1170, 17476), (1224, 16705), (1285, 15912), (1326, 15420), (1530, 13364), (1542, 13260), (1560, 13107), (1768, 11565), (1989, 10280), (2040, 10023), (2056, 9945), (2210, 9252), (2313, 8840), (2340, 8738), (2570, 7956), (2652, 7710), (3060, 6682), (3084, 6630), (3315, 6168), (3341, 6120), (3855, 5304), (3978, 5140), (4369, 4680), (4420, 4626)]