2178947840

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{617}}^1$

素因数の和:758

約数の個数: 144

約数和(自身を含む): 5456989440

約数和(自身を除く): 3278041600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 89, 124, 128, 155, 160, 178, 248, 256, 310, 320, 356, 445, 496, 617, 620, 640, 712, 890, 992, 1234, 1240, 1280, 1424, 1780, 1984, 2468, 2480, 2759, 2848, 3085, 3560, 3968, 4936, 4960, 5518, 5696, 6170, 7120, 7936, 9872, 9920, 11036, 11392, 12340, 13795, 14240, 19127, 19744, 19840, 22072, 22784, 24680, 27590, 28480, 38254, 39488, 39680, 44144, 49360, 54913, 55180, 56960, 76508, 78976, 88288, 95635, 98720, 109826, 110360, 113920, 153016, 157952, 176576, 191270, 197440, 219652, 220720, 274565, 306032, 353152, 382540, 394880, 439304, 441440, 549130, 612064, 706304, 765080, 789760, 878608, 882880, 1098260, 1224128, 1530160, 1702303, 1757216, 1765760, 2196520, 2448256, 3060320, 3404606, 3514432, 3531520, 4393040, 4896512, 6120640, 6809212, 7028864, 8511515, 8786080, 12241280, 13618424, 14057728, 17023030, 17572160, 24482560, 27236848, 34046060, 35144320, 54473696, 68092120, 70288640, 108947392, 136184240, 217894784, 272368480, 435789568, 544736960, 1089473920, 2178947840]

約数ペア:

[(1, 2178947840), (2, 1089473920), (4, 544736960), (5, 435789568), (8, 272368480), (10, 217894784), (16, 136184240), (20, 108947392), (31, 70288640), (32, 68092120), (40, 54473696), (62, 35144320), (64, 34046060), (80, 27236848), (89, 24482560), (124, 17572160), (128, 17023030), (155, 14057728), (160, 13618424), (178, 12241280), (248, 8786080), (256, 8511515), (310, 7028864), (320, 6809212), (356, 6120640), (445, 4896512), (496, 4393040), (617, 3531520), (620, 3514432), (640, 3404606), (712, 3060320), (890, 2448256), (992, 2196520), (1234, 1765760), (1240, 1757216), (1280, 1702303), (1424, 1530160), (1780, 1224128), (1984, 1098260), (2468, 882880), (2480, 878608), (2759, 789760), (2848, 765080), (3085, 706304), (3560, 612064), (3968, 549130), (4936, 441440), (4960, 439304), (5518, 394880), (5696, 382540), (6170, 353152), (7120, 306032), (7936, 274565), (9872, 220720), (9920, 219652), (11036, 197440), (11392, 191270), (12340, 176576), (13795, 157952), (14240, 153016), (19127, 113920), (19744, 110360), (19840, 109826), (22072, 98720), (22784, 95635), (24680, 88288), (27590, 78976), (28480, 76508), (38254, 56960), (39488, 55180), (39680, 54913), (44144, 49360)]