19867520

素因数分解:

$2^7\times 5^1\times {\mathrm{37}}^1\times {\mathrm{839}}^1$

素因数の和:895

約数の個数: 64

約数和(自身を含む): 48837600

約数和(自身を除く): 28970080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 128, 148, 160, 185, 296, 320, 370, 592, 640, 740, 839, 1184, 1480, 1678, 2368, 2960, 3356, 4195, 4736, 5920, 6712, 8390, 11840, 13424, 16780, 23680, 26848, 31043, 33560, 53696, 62086, 67120, 107392, 124172, 134240, 155215, 248344, 268480, 310430, 496688, 536960, 620860, 993376, 1241720, 1986752, 2483440, 3973504, 4966880, 9933760, 19867520]

約数ペア:

[(1, 19867520), (2, 9933760), (4, 4966880), (5, 3973504), (8, 2483440), (10, 1986752), (16, 1241720), (20, 993376), (32, 620860), (37, 536960), (40, 496688), (64, 310430), (74, 268480), (80, 248344), (128, 155215), (148, 134240), (160, 124172), (185, 107392), (296, 67120), (320, 62086), (370, 53696), (592, 33560), (640, 31043), (740, 26848), (839, 23680), (1184, 16780), (1480, 13424), (1678, 11840), (2368, 8390), (2960, 6712), (3356, 5920), (4195, 4736)]