21167690215

素因数分解:

$5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{66541}}^1$

素因数の和:66763

約数の個数: 32

約数和(自身を含む): 29704348800

約数和(自身を除く): 8536658585

約数列:

[1, 5, 7, 35, 61, 149, 305, 427, 745, 1043, 2135, 5215, 9089, 45445, 63623, 66541, 318115, 332705, 465787, 2328935, 4059001, 9914609, 20295005, 28413007, 49573045, 69402263, 142065035, 347011315, 604791149, 3023955745, 4233538043, 21167690215]

約数ペア:

[(1, 21167690215), (5, 4233538043), (7, 3023955745), (35, 604791149), (61, 347011315), (149, 142065035), (305, 69402263), (427, 49573045), (745, 28413007), (1043, 20295005), (2135, 9914609), (5215, 4059001), (9089, 2328935), (45445, 465787), (63623, 332705), (66541, 318115)]