21000612454

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{439}}^1\times {\mathrm{2459}}^1$

素因数の和:3108

約数の個数: 32

約数和(自身を含む): 32264179200

約数和(自身を除く): 11263566746

約数列:

[1, 2, 71, 137, 142, 274, 439, 878, 2459, 4918, 9727, 19454, 31169, 60143, 62338, 120286, 174589, 336883, 349178, 673766, 1079501, 2159002, 4270153, 8540306, 23918693, 47837386, 76644571, 147891637, 153289142, 295783274, 10500306227, 21000612454]

約数ペア:

[(1, 21000612454), (2, 10500306227), (71, 295783274), (137, 153289142), (142, 147891637), (274, 76644571), (439, 47837386), (878, 23918693), (2459, 8540306), (4918, 4270153), (9727, 2159002), (19454, 1079501), (31169, 673766), (60143, 349178), (62338, 336883), (120286, 174589)]