20312921600

素因数分解:

$2^9\times 5^2\times {\mathrm{73}}^1\times {\mathrm{21739}}^1$

素因数の和:21840

約数の個数: 120

約数和(自身を含む): 51018605880

約数和(自身を除く): 30705684280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 73, 80, 100, 128, 146, 160, 200, 256, 292, 320, 365, 400, 512, 584, 640, 730, 800, 1168, 1280, 1460, 1600, 1825, 2336, 2560, 2920, 3200, 3650, 4672, 5840, 6400, 7300, 9344, 11680, 12800, 14600, 18688, 21739, 23360, 29200, 37376, 43478, 46720, 58400, 86956, 93440, 108695, 116800, 173912, 186880, 217390, 233600, 347824, 434780, 467200, 543475, 695648, 869560, 934400, 1086950, 1391296, 1586947, 1739120, 2173900, 2782592, 3173894, 3478240, 4347800, 5565184, 6347788, 6956480, 7934735, 8695600, 11130368, 12695576, 13912960, 15869470, 17391200, 25391152, 27825920, 31738940, 34782400, 39673675, 50782304, 55651840, 63477880, 69564800, 79347350, 101564608, 126955760, 139129600, 158694700, 203129216, 253911520, 278259200, 317389400, 406258432, 507823040, 634778800, 812516864, 1015646080, 1269557600, 2031292160, 2539115200, 4062584320, 5078230400, 10156460800, 20312921600]

約数ペア:

[(1, 20312921600), (2, 10156460800), (4, 5078230400), (5, 4062584320), (8, 2539115200), (10, 2031292160), (16, 1269557600), (20, 1015646080), (25, 812516864), (32, 634778800), (40, 507823040), (50, 406258432), (64, 317389400), (73, 278259200), (80, 253911520), (100, 203129216), (128, 158694700), (146, 139129600), (160, 126955760), (200, 101564608), (256, 79347350), (292, 69564800), (320, 63477880), (365, 55651840), (400, 50782304), (512, 39673675), (584, 34782400), (640, 31738940), (730, 27825920), (800, 25391152), (1168, 17391200), (1280, 15869470), (1460, 13912960), (1600, 12695576), (1825, 11130368), (2336, 8695600), (2560, 7934735), (2920, 6956480), (3200, 6347788), (3650, 5565184), (4672, 4347800), (5840, 3478240), (6400, 3173894), (7300, 2782592), (9344, 2173900), (11680, 1739120), (12800, 1586947), (14600, 1391296), (18688, 1086950), (21739, 934400), (23360, 869560), (29200, 695648), (37376, 543475), (43478, 467200), (46720, 434780), (58400, 347824), (86956, 233600), (93440, 217390), (108695, 186880), (116800, 173912)]