20299360

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^2\times {\mathrm{439}}^1$

素因数の和:488

約数の個数: 72

約数和(自身を含む): 51060240

約数和(自身を除く): 30760880

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 289, 340, 439, 544, 578, 680, 878, 1156, 1360, 1445, 1756, 2195, 2312, 2720, 2890, 3512, 4390, 4624, 5780, 7024, 7463, 8780, 9248, 11560, 14048, 14926, 17560, 23120, 29852, 35120, 37315, 46240, 59704, 70240, 74630, 119408, 126871, 149260, 238816, 253742, 298520, 507484, 597040, 634355, 1014968, 1194080, 1268710, 2029936, 2537420, 4059872, 5074840, 10149680, 20299360]

約数ペア:

[(1, 20299360), (2, 10149680), (4, 5074840), (5, 4059872), (8, 2537420), (10, 2029936), (16, 1268710), (17, 1194080), (20, 1014968), (32, 634355), (34, 597040), (40, 507484), (68, 298520), (80, 253742), (85, 238816), (136, 149260), (160, 126871), (170, 119408), (272, 74630), (289, 70240), (340, 59704), (439, 46240), (544, 37315), (578, 35120), (680, 29852), (878, 23120), (1156, 17560), (1360, 14926), (1445, 14048), (1756, 11560), (2195, 9248), (2312, 8780), (2720, 7463), (2890, 7024), (3512, 5780), (4390, 4624)]