21972320

素因数分解:

$2^5\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1543}}^1$

素因数の和:1647

約数の個数: 48

約数和(自身を含む): 52526880

約数和(自身を除く): 30554560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 89, 160, 178, 356, 445, 712, 890, 1424, 1543, 1780, 2848, 3086, 3560, 6172, 7120, 7715, 12344, 14240, 15430, 24688, 30860, 49376, 61720, 123440, 137327, 246880, 274654, 549308, 686635, 1098616, 1373270, 2197232, 2746540, 4394464, 5493080, 10986160, 21972320]

約数ペア:

[(1, 21972320), (2, 10986160), (4, 5493080), (5, 4394464), (8, 2746540), (10, 2197232), (16, 1373270), (20, 1098616), (32, 686635), (40, 549308), (80, 274654), (89, 246880), (160, 137327), (178, 123440), (356, 61720), (445, 49376), (712, 30860), (890, 24688), (1424, 15430), (1543, 14240), (1780, 12344), (2848, 7715), (3086, 7120), (3560, 6172)]