20306095280

素因数分解:

$2^4\times 5^1\times {\mathrm{6449}}^1\times {\mathrm{39359}}^1$

素因数の和:45821

約数の個数: 40

約数和(自身を含む): 47220192000

約数和(自身を除く): 26914096720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 6449, 12898, 25796, 32245, 39359, 51592, 64490, 78718, 103184, 128980, 157436, 196795, 257960, 314872, 393590, 515920, 629744, 787180, 1574360, 3148720, 253826191, 507652382, 1015304764, 1269130955, 2030609528, 2538261910, 4061219056, 5076523820, 10153047640, 20306095280]

約数ペア:

[(1, 20306095280), (2, 10153047640), (4, 5076523820), (5, 4061219056), (8, 2538261910), (10, 2030609528), (16, 1269130955), (20, 1015304764), (40, 507652382), (80, 253826191), (6449, 3148720), (12898, 1574360), (25796, 787180), (32245, 629744), (39359, 515920), (51592, 393590), (64490, 314872), (78718, 257960), (103184, 196795), (128980, 157436)]