20847280

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{7043}}^1$

素因数の和:7093

約数の個数: 40

約数和(自身を含む): 49786992

約数和(自身を除く): 28939712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 7043, 14086, 28172, 35215, 56344, 70430, 112688, 140860, 260591, 281720, 521182, 563440, 1042364, 1302955, 2084728, 2605910, 4169456, 5211820, 10423640, 20847280]

約数ペア:

[(1, 20847280), (2, 10423640), (4, 5211820), (5, 4169456), (8, 2605910), (10, 2084728), (16, 1302955), (20, 1042364), (37, 563440), (40, 521182), (74, 281720), (80, 260591), (148, 140860), (185, 112688), (296, 70430), (370, 56344), (592, 35215), (740, 28172), (1480, 14086), (2960, 7043)]