28509810

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{349}}^1\times {\mathrm{389}}^1$

素因数の和:755

約数の個数: 64

約数和(自身を含む): 78624000

約数和(自身を除く): 50114190

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 349, 389, 698, 778, 1047, 1167, 1745, 1945, 2094, 2334, 2443, 2723, 3490, 3890, 4886, 5235, 5446, 5835, 7329, 8169, 10470, 11670, 12215, 13615, 14658, 16338, 24430, 27230, 36645, 40845, 73290, 81690, 135761, 271522, 407283, 678805, 814566, 950327, 1357610, 1900654, 2036415, 2850981, 4072830, 4751635, 5701962, 9503270, 14254905, 28509810]

約数ペア:

[(1, 28509810), (2, 14254905), (3, 9503270), (5, 5701962), (6, 4751635), (7, 4072830), (10, 2850981), (14, 2036415), (15, 1900654), (21, 1357610), (30, 950327), (35, 814566), (42, 678805), (70, 407283), (105, 271522), (210, 135761), (349, 81690), (389, 73290), (698, 40845), (778, 36645), (1047, 27230), (1167, 24430), (1745, 16338), (1945, 14658), (2094, 13615), (2334, 12215), (2443, 11670), (2723, 10470), (3490, 8169), (3890, 7329), (4886, 5835), (5235, 5446)]