20970690

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3163}}^1$

素因数の和:3203

約数の個数: 64

約数和(自身を含む): 57407616

約数和(自身を除く): 36436926

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 17, 26, 30, 34, 39, 51, 65, 78, 85, 102, 130, 170, 195, 221, 255, 390, 442, 510, 663, 1105, 1326, 2210, 3163, 3315, 6326, 6630, 9489, 15815, 18978, 31630, 41119, 47445, 53771, 82238, 94890, 107542, 123357, 161313, 205595, 246714, 268855, 322626, 411190, 537710, 616785, 699023, 806565, 1233570, 1398046, 1613130, 2097069, 3495115, 4194138, 6990230, 10485345, 20970690]

約数ペア:

[(1, 20970690), (2, 10485345), (3, 6990230), (5, 4194138), (6, 3495115), (10, 2097069), (13, 1613130), (15, 1398046), (17, 1233570), (26, 806565), (30, 699023), (34, 616785), (39, 537710), (51, 411190), (65, 322626), (78, 268855), (85, 246714), (102, 205595), (130, 161313), (170, 123357), (195, 107542), (221, 94890), (255, 82238), (390, 53771), (442, 47445), (510, 41119), (663, 31630), (1105, 18978), (1326, 15815), (2210, 9489), (3163, 6630), (3315, 6326)]