21389160

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13711}}^1$

素因数の和:13738

約数の個数: 64

約数和(自身を含む): 69108480

約数和(自身を除く): 47719320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13711, 27422, 41133, 54844, 68555, 82266, 109688, 137110, 164532, 178243, 205665, 274220, 329064, 356486, 411330, 534729, 548440, 712972, 822660, 891215, 1069458, 1425944, 1645320, 1782430, 2138916, 2673645, 3564860, 4277832, 5347290, 7129720, 10694580, 21389160]

約数ペア:

[(1, 21389160), (2, 10694580), (3, 7129720), (4, 5347290), (5, 4277832), (6, 3564860), (8, 2673645), (10, 2138916), (12, 1782430), (13, 1645320), (15, 1425944), (20, 1069458), (24, 891215), (26, 822660), (30, 712972), (39, 548440), (40, 534729), (52, 411330), (60, 356486), (65, 329064), (78, 274220), (104, 205665), (120, 178243), (130, 164532), (156, 137110), (195, 109688), (260, 82266), (312, 68555), (390, 54844), (520, 41133), (780, 27422), (1560, 13711)]