20434804

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:129

約数の個数: 72

約数和(自身を含む): 42836640

約数和(自身を除く): 22401836

約数列:

[1, 2, 4, 13, 19, 26, 37, 38, 43, 52, 74, 76, 86, 148, 169, 172, 247, 338, 481, 494, 559, 676, 703, 817, 962, 988, 1118, 1406, 1591, 1634, 1924, 2236, 2812, 3182, 3211, 3268, 6253, 6364, 6422, 7267, 9139, 10621, 12506, 12844, 14534, 18278, 20683, 21242, 25012, 29068, 30229, 36556, 41366, 42484, 60458, 82732, 118807, 120916, 138073, 237614, 268879, 276146, 392977, 475228, 537758, 552292, 785954, 1075516, 1571908, 5108701, 10217402, 20434804]

約数ペア:

[(1, 20434804), (2, 10217402), (4, 5108701), (13, 1571908), (19, 1075516), (26, 785954), (37, 552292), (38, 537758), (43, 475228), (52, 392977), (74, 276146), (76, 268879), (86, 237614), (148, 138073), (169, 120916), (172, 118807), (247, 82732), (338, 60458), (481, 42484), (494, 41366), (559, 36556), (676, 30229), (703, 29068), (817, 25012), (962, 21242), (988, 20683), (1118, 18278), (1406, 14534), (1591, 12844), (1634, 12506), (1924, 10621), (2236, 9139), (2812, 7267), (3182, 6422), (3211, 6364), (3268, 6253)]