80811990

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{128273}}^1$

素因数の和:128293

約数の個数: 48

約数和(自身を含む): 240128928

約数和(自身を除く): 159316938

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 126, 210, 315, 630, 128273, 256546, 384819, 641365, 769638, 897911, 1154457, 1282730, 1795822, 1924095, 2308914, 2693733, 3848190, 4489555, 5387466, 5772285, 8081199, 8979110, 11544570, 13468665, 16162398, 26937330, 40405995, 80811990]

約数ペア:

[(1, 80811990), (2, 40405995), (3, 26937330), (5, 16162398), (6, 13468665), (7, 11544570), (9, 8979110), (10, 8081199), (14, 5772285), (15, 5387466), (18, 4489555), (21, 3848190), (30, 2693733), (35, 2308914), (42, 1924095), (45, 1795822), (63, 1282730), (70, 1154457), (90, 897911), (105, 769638), (126, 641365), (210, 384819), (315, 256546), (630, 128273)]