28921990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^2\times {\mathrm{181}}^1$

素因数の和:265

約数の個数: 48

約数和(自身を含む): 57067920

約数和(自身を除く): 28145930

約数列:

[1, 2, 5, 10, 19, 29, 38, 58, 95, 145, 181, 190, 290, 362, 551, 841, 905, 1102, 1682, 1810, 2755, 3439, 4205, 5249, 5510, 6878, 8410, 10498, 15979, 17195, 26245, 31958, 34390, 52490, 79895, 99731, 152221, 159790, 199462, 304442, 498655, 761105, 997310, 1522210, 2892199, 5784398, 14460995, 28921990]

約数ペア:

[(1, 28921990), (2, 14460995), (5, 5784398), (10, 2892199), (19, 1522210), (29, 997310), (38, 761105), (58, 498655), (95, 304442), (145, 199462), (181, 159790), (190, 152221), (290, 99731), (362, 79895), (551, 52490), (841, 34390), (905, 31958), (1102, 26245), (1682, 17195), (1810, 15979), (2755, 10498), (3439, 8410), (4205, 6878), (5249, 5510)]