31709720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{269}}^1\times {\mathrm{421}}^1$

素因数の和:708

約数の個数: 64

約数和(自身を含む): 82036800

約数和(自身を除く): 50327080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 269, 280, 421, 538, 842, 1076, 1345, 1684, 1883, 2105, 2152, 2690, 2947, 3368, 3766, 4210, 5380, 5894, 7532, 8420, 9415, 10760, 11788, 14735, 15064, 16840, 18830, 23576, 29470, 37660, 58940, 75320, 113249, 117880, 226498, 452996, 566245, 792743, 905992, 1132490, 1585486, 2264980, 3170972, 3963715, 4529960, 6341944, 7927430, 15854860, 31709720]

約数ペア:

[(1, 31709720), (2, 15854860), (4, 7927430), (5, 6341944), (7, 4529960), (8, 3963715), (10, 3170972), (14, 2264980), (20, 1585486), (28, 1132490), (35, 905992), (40, 792743), (56, 566245), (70, 452996), (140, 226498), (269, 117880), (280, 113249), (421, 75320), (538, 58940), (842, 37660), (1076, 29470), (1345, 23576), (1684, 18830), (1883, 16840), (2105, 15064), (2152, 14735), (2690, 11788), (2947, 10760), (3368, 9415), (3766, 8420), (4210, 7532), (5380, 5894)]