81320000

素因数分解:

$2^6\times 5^4\times {\mathrm{19}}^1\times {\mathrm{107}}^1$

素因数の和:158

約数の個数: 140

約数和(自身を含む): 214243920

約数和(自身を除く): 132923920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 50, 64, 76, 80, 95, 100, 107, 125, 152, 160, 190, 200, 214, 250, 304, 320, 380, 400, 428, 475, 500, 535, 608, 625, 760, 800, 856, 950, 1000, 1070, 1216, 1250, 1520, 1600, 1712, 1900, 2000, 2033, 2140, 2375, 2500, 2675, 3040, 3424, 3800, 4000, 4066, 4280, 4750, 5000, 5350, 6080, 6848, 7600, 8000, 8132, 8560, 9500, 10000, 10165, 10700, 11875, 13375, 15200, 16264, 17120, 19000, 20000, 20330, 21400, 23750, 26750, 30400, 32528, 34240, 38000, 40000, 40660, 42800, 47500, 50825, 53500, 65056, 66875, 76000, 81320, 85600, 95000, 101650, 107000, 130112, 133750, 152000, 162640, 171200, 190000, 203300, 214000, 254125, 267500, 325280, 380000, 406600, 428000, 508250, 535000, 650560, 760000, 813200, 856000, 1016500, 1070000, 1270625, 1626400, 2033000, 2140000, 2541250, 3252800, 4066000, 4280000, 5082500, 8132000, 10165000, 16264000, 20330000, 40660000, 81320000]

約数ペア:

[(1, 81320000), (2, 40660000), (4, 20330000), (5, 16264000), (8, 10165000), (10, 8132000), (16, 5082500), (19, 4280000), (20, 4066000), (25, 3252800), (32, 2541250), (38, 2140000), (40, 2033000), (50, 1626400), (64, 1270625), (76, 1070000), (80, 1016500), (95, 856000), (100, 813200), (107, 760000), (125, 650560), (152, 535000), (160, 508250), (190, 428000), (200, 406600), (214, 380000), (250, 325280), (304, 267500), (320, 254125), (380, 214000), (400, 203300), (428, 190000), (475, 171200), (500, 162640), (535, 152000), (608, 133750), (625, 130112), (760, 107000), (800, 101650), (856, 95000), (950, 85600), (1000, 81320), (1070, 76000), (1216, 66875), (1250, 65056), (1520, 53500), (1600, 50825), (1712, 47500), (1900, 42800), (2000, 40660), (2033, 40000), (2140, 38000), (2375, 34240), (2500, 32528), (2675, 30400), (3040, 26750), (3424, 23750), (3800, 21400), (4000, 20330), (4066, 20000), (4280, 19000), (4750, 17120), (5000, 16264), (5350, 15200), (6080, 13375), (6848, 11875), (7600, 10700), (8000, 10165), (8132, 10000), (8560, 9500)]