21208716

素因数分解:

$2^2\times 3^4\times {\mathrm{67}}^1\times {\mathrm{977}}^1$

素因数の和:1060

約数の個数: 60

約数和(自身を含む): 56328888

約数和(自身を除く): 35120172

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 67, 81, 108, 134, 162, 201, 268, 324, 402, 603, 804, 977, 1206, 1809, 1954, 2412, 2931, 3618, 3908, 5427, 5862, 7236, 8793, 10854, 11724, 17586, 21708, 26379, 35172, 52758, 65459, 79137, 105516, 130918, 158274, 196377, 261836, 316548, 392754, 589131, 785508, 1178262, 1767393, 2356524, 3534786, 5302179, 7069572, 10604358, 21208716]

約数ペア:

[(1, 21208716), (2, 10604358), (3, 7069572), (4, 5302179), (6, 3534786), (9, 2356524), (12, 1767393), (18, 1178262), (27, 785508), (36, 589131), (54, 392754), (67, 316548), (81, 261836), (108, 196377), (134, 158274), (162, 130918), (201, 105516), (268, 79137), (324, 65459), (402, 52758), (603, 35172), (804, 26379), (977, 21708), (1206, 17586), (1809, 11724), (1954, 10854), (2412, 8793), (2931, 7236), (3618, 5862), (3908, 5427)]