81739216

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:133

約数の個数: 120

約数和(自身を含む): 189705120

約数和(自身を除く): 107965904

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 37, 38, 43, 52, 74, 76, 86, 104, 148, 152, 169, 172, 208, 247, 296, 304, 338, 344, 481, 494, 559, 592, 676, 688, 703, 817, 962, 988, 1118, 1352, 1406, 1591, 1634, 1924, 1976, 2236, 2704, 2812, 3182, 3211, 3268, 3848, 3952, 4472, 5624, 6253, 6364, 6422, 6536, 7267, 7696, 8944, 9139, 10621, 11248, 12506, 12728, 12844, 13072, 14534, 18278, 20683, 21242, 25012, 25456, 25688, 29068, 30229, 36556, 41366, 42484, 50024, 51376, 58136, 60458, 73112, 82732, 84968, 100048, 116272, 118807, 120916, 138073, 146224, 165464, 169936, 237614, 241832, 268879, 276146, 330928, 392977, 475228, 483664, 537758, 552292, 785954, 950456, 1075516, 1104584, 1571908, 1900912, 2151032, 2209168, 3143816, 4302064, 5108701, 6287632, 10217402, 20434804, 40869608, 81739216]

約数ペア:

[(1, 81739216), (2, 40869608), (4, 20434804), (8, 10217402), (13, 6287632), (16, 5108701), (19, 4302064), (26, 3143816), (37, 2209168), (38, 2151032), (43, 1900912), (52, 1571908), (74, 1104584), (76, 1075516), (86, 950456), (104, 785954), (148, 552292), (152, 537758), (169, 483664), (172, 475228), (208, 392977), (247, 330928), (296, 276146), (304, 268879), (338, 241832), (344, 237614), (481, 169936), (494, 165464), (559, 146224), (592, 138073), (676, 120916), (688, 118807), (703, 116272), (817, 100048), (962, 84968), (988, 82732), (1118, 73112), (1352, 60458), (1406, 58136), (1591, 51376), (1634, 50024), (1924, 42484), (1976, 41366), (2236, 36556), (2704, 30229), (2812, 29068), (3182, 25688), (3211, 25456), (3268, 25012), (3848, 21242), (3952, 20683), (4472, 18278), (5624, 14534), (6253, 13072), (6364, 12844), (6422, 12728), (6536, 12506), (7267, 11248), (7696, 10621), (8944, 9139)]