21970240

素因数分解:

$2^6\times 5^1\times {\mathrm{71}}^1\times {\mathrm{967}}^1$

素因数の和:1055

約数の個数: 56

約数和(自身を含む): 53108352

約数和(自身を除く): 31138112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 142, 160, 284, 320, 355, 568, 710, 967, 1136, 1420, 1934, 2272, 2840, 3868, 4544, 4835, 5680, 7736, 9670, 11360, 15472, 19340, 22720, 30944, 38680, 61888, 68657, 77360, 137314, 154720, 274628, 309440, 343285, 549256, 686570, 1098512, 1373140, 2197024, 2746280, 4394048, 5492560, 10985120, 21970240]

約数ペア:

[(1, 21970240), (2, 10985120), (4, 5492560), (5, 4394048), (8, 2746280), (10, 2197024), (16, 1373140), (20, 1098512), (32, 686570), (40, 549256), (64, 343285), (71, 309440), (80, 274628), (142, 154720), (160, 137314), (284, 77360), (320, 68657), (355, 61888), (568, 38680), (710, 30944), (967, 22720), (1136, 19340), (1420, 15472), (1934, 11360), (2272, 9670), (2840, 7736), (3868, 5680), (4544, 4835)]