28438720

素因数分解:

$2^6\times 5^1\times {\mathrm{181}}^1\times {\mathrm{491}}^1$

素因数の和:689

約数の個数: 56

約数和(自身を含む): 68232528

約数和(自身を除く): 39793808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 181, 320, 362, 491, 724, 905, 982, 1448, 1810, 1964, 2455, 2896, 3620, 3928, 4910, 5792, 7240, 7856, 9820, 11584, 14480, 15712, 19640, 28960, 31424, 39280, 57920, 78560, 88871, 157120, 177742, 355484, 444355, 710968, 888710, 1421936, 1777420, 2843872, 3554840, 5687744, 7109680, 14219360, 28438720]

約数ペア:

[(1, 28438720), (2, 14219360), (4, 7109680), (5, 5687744), (8, 3554840), (10, 2843872), (16, 1777420), (20, 1421936), (32, 888710), (40, 710968), (64, 444355), (80, 355484), (160, 177742), (181, 157120), (320, 88871), (362, 78560), (491, 57920), (724, 39280), (905, 31424), (982, 28960), (1448, 19640), (1810, 15712), (1964, 14480), (2455, 11584), (2896, 9820), (3620, 7856), (3928, 7240), (4910, 5792)]