21249828

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{661}}^1$

素因数の和:737

約数の個数: 72

約数和(自身を含む): 57832320

約数和(自身を除く): 36582492

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 47, 57, 76, 94, 114, 141, 171, 188, 228, 282, 342, 423, 564, 661, 684, 846, 893, 1322, 1692, 1786, 1983, 2644, 2679, 3572, 3966, 5358, 5949, 7932, 8037, 10716, 11898, 12559, 16074, 23796, 25118, 31067, 32148, 37677, 50236, 62134, 75354, 93201, 113031, 124268, 150708, 186402, 226062, 279603, 372804, 452124, 559206, 590273, 1118412, 1180546, 1770819, 2361092, 3541638, 5312457, 7083276, 10624914, 21249828]

約数ペア:

[(1, 21249828), (2, 10624914), (3, 7083276), (4, 5312457), (6, 3541638), (9, 2361092), (12, 1770819), (18, 1180546), (19, 1118412), (36, 590273), (38, 559206), (47, 452124), (57, 372804), (76, 279603), (94, 226062), (114, 186402), (141, 150708), (171, 124268), (188, 113031), (228, 93201), (282, 75354), (342, 62134), (423, 50236), (564, 37677), (661, 32148), (684, 31067), (846, 25118), (893, 23796), (1322, 16074), (1692, 12559), (1786, 11898), (1983, 10716), (2644, 8037), (2679, 7932), (3572, 5949), (3966, 5358)]