278679990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{349}}^1\times {\mathrm{619}}^1$

素因数の和:1021

約数の個数: 64

約数和(自身を含む): 687456000

約数和(自身を除く): 408776010

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 215, 258, 349, 430, 619, 645, 698, 1047, 1238, 1290, 1745, 1857, 2094, 3095, 3490, 3714, 5235, 6190, 9285, 10470, 15007, 18570, 26617, 30014, 45021, 53234, 75035, 79851, 90042, 133085, 150070, 159702, 216031, 225105, 266170, 399255, 432062, 450210, 648093, 798510, 1080155, 1296186, 2160310, 3240465, 6480930, 9289333, 18578666, 27867999, 46446665, 55735998, 92893330, 139339995, 278679990]

約数ペア:

[(1, 278679990), (2, 139339995), (3, 92893330), (5, 55735998), (6, 46446665), (10, 27867999), (15, 18578666), (30, 9289333), (43, 6480930), (86, 3240465), (129, 2160310), (215, 1296186), (258, 1080155), (349, 798510), (430, 648093), (619, 450210), (645, 432062), (698, 399255), (1047, 266170), (1238, 225105), (1290, 216031), (1745, 159702), (1857, 150070), (2094, 133085), (3095, 90042), (3490, 79851), (3714, 75035), (5235, 53234), (6190, 45021), (9285, 30014), (10470, 26617), (15007, 18570)]