20131786880

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{337}}^1\times {\mathrm{3011}}^1$

素因数の和:3398

約数の個数: 128

約数和(自身を含む): 49844021760

約数和(自身を除く): 29712234880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 337, 496, 620, 640, 674, 992, 1240, 1348, 1685, 1984, 2480, 2696, 3011, 3370, 3968, 4960, 5392, 6022, 6740, 9920, 10447, 10784, 12044, 13480, 15055, 19840, 20894, 21568, 24088, 26960, 30110, 41788, 43136, 48176, 52235, 53920, 60220, 83576, 93341, 96352, 104470, 107840, 120440, 167152, 186682, 192704, 208940, 215680, 240880, 334304, 373364, 385408, 417880, 466705, 481760, 668608, 746728, 835760, 933410, 963520, 1014707, 1337216, 1493456, 1671520, 1866820, 1927040, 2029414, 2986912, 3343040, 3733640, 4058828, 5073535, 5973824, 6686080, 7467280, 8117656, 10147070, 11947648, 14934560, 16235312, 20294140, 29869120, 31455917, 32470624, 40588280, 59738240, 62911834, 64941248, 81176560, 125823668, 129882496, 157279585, 162353120, 251647336, 314559170, 324706240, 503294672, 629118340, 649412480, 1006589344, 1258236680, 2013178688, 2516473360, 4026357376, 5032946720, 10065893440, 20131786880]

約数ペア:

[(1, 20131786880), (2, 10065893440), (4, 5032946720), (5, 4026357376), (8, 2516473360), (10, 2013178688), (16, 1258236680), (20, 1006589344), (31, 649412480), (32, 629118340), (40, 503294672), (62, 324706240), (64, 314559170), (80, 251647336), (124, 162353120), (128, 157279585), (155, 129882496), (160, 125823668), (248, 81176560), (310, 64941248), (320, 62911834), (337, 59738240), (496, 40588280), (620, 32470624), (640, 31455917), (674, 29869120), (992, 20294140), (1240, 16235312), (1348, 14934560), (1685, 11947648), (1984, 10147070), (2480, 8117656), (2696, 7467280), (3011, 6686080), (3370, 5973824), (3968, 5073535), (4960, 4058828), (5392, 3733640), (6022, 3343040), (6740, 2986912), (9920, 2029414), (10447, 1927040), (10784, 1866820), (12044, 1671520), (13480, 1493456), (15055, 1337216), (19840, 1014707), (20894, 963520), (21568, 933410), (24088, 835760), (26960, 746728), (30110, 668608), (41788, 481760), (43136, 466705), (48176, 417880), (52235, 385408), (53920, 373364), (60220, 334304), (83576, 240880), (93341, 215680), (96352, 208940), (104470, 192704), (107840, 186682), (120440, 167152)]