128422900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{257}}^1\times {\mathrm{263}}^1$

素因数の和:553

約数の個数: 72

約数和(自身を含む): 295606080

約数和(自身を除く): 167183180

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 257, 263, 380, 475, 514, 526, 950, 1028, 1052, 1285, 1315, 1900, 2570, 2630, 4883, 4997, 5140, 5260, 6425, 6575, 9766, 9994, 12850, 13150, 19532, 19988, 24415, 24985, 25700, 26300, 48830, 49970, 67591, 97660, 99940, 122075, 124925, 135182, 244150, 249850, 270364, 337955, 488300, 499700, 675910, 1284229, 1351820, 1689775, 2568458, 3379550, 5136916, 6421145, 6759100, 12842290, 25684580, 32105725, 64211450, 128422900]

約数ペア:

[(1, 128422900), (2, 64211450), (4, 32105725), (5, 25684580), (10, 12842290), (19, 6759100), (20, 6421145), (25, 5136916), (38, 3379550), (50, 2568458), (76, 1689775), (95, 1351820), (100, 1284229), (190, 675910), (257, 499700), (263, 488300), (380, 337955), (475, 270364), (514, 249850), (526, 244150), (950, 135182), (1028, 124925), (1052, 122075), (1285, 99940), (1315, 97660), (1900, 67591), (2570, 49970), (2630, 48830), (4883, 26300), (4997, 25700), (5140, 24985), (5260, 24415), (6425, 19988), (6575, 19532), (9766, 13150), (9994, 12850)]