217990760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{13523}}^1$

素因数の和:13578

約数の個数: 64

約数和(自身を含む): 545287680

約数和(自身を除く): 327296920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1240, 1612, 2015, 3224, 4030, 8060, 13523, 16120, 27046, 54092, 67615, 108184, 135230, 175799, 270460, 351598, 419213, 540920, 703196, 838426, 878995, 1406392, 1676852, 1757990, 2096065, 3353704, 3515980, 4192130, 5449769, 7031960, 8384260, 10899538, 16768520, 21799076, 27248845, 43598152, 54497690, 108995380, 217990760]

約数ペア:

[(1, 217990760), (2, 108995380), (4, 54497690), (5, 43598152), (8, 27248845), (10, 21799076), (13, 16768520), (20, 10899538), (26, 8384260), (31, 7031960), (40, 5449769), (52, 4192130), (62, 3515980), (65, 3353704), (104, 2096065), (124, 1757990), (130, 1676852), (155, 1406392), (248, 878995), (260, 838426), (310, 703196), (403, 540920), (520, 419213), (620, 351598), (806, 270460), (1240, 175799), (1612, 135230), (2015, 108184), (3224, 67615), (4030, 54092), (8060, 27046), (13523, 16120)]