56801780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{389}}^1$

素因数の和:561

約数の個数: 72

約数和(自身を含む): 140049000

約数和(自身を除く): 83247220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 149, 196, 245, 298, 389, 490, 596, 745, 778, 980, 1043, 1490, 1556, 1945, 2086, 2723, 2980, 3890, 4172, 5215, 5446, 7301, 7780, 10430, 10892, 13615, 14602, 19061, 20860, 27230, 29204, 36505, 38122, 54460, 57961, 73010, 76244, 95305, 115922, 146020, 190610, 231844, 289805, 381220, 405727, 579610, 811454, 1159220, 1622908, 2028635, 2840089, 4057270, 5680178, 8114540, 11360356, 14200445, 28400890, 56801780]

約数ペア:

[(1, 56801780), (2, 28400890), (4, 14200445), (5, 11360356), (7, 8114540), (10, 5680178), (14, 4057270), (20, 2840089), (28, 2028635), (35, 1622908), (49, 1159220), (70, 811454), (98, 579610), (140, 405727), (149, 381220), (196, 289805), (245, 231844), (298, 190610), (389, 146020), (490, 115922), (596, 95305), (745, 76244), (778, 73010), (980, 57961), (1043, 54460), (1490, 38122), (1556, 36505), (1945, 29204), (2086, 27230), (2723, 20860), (2980, 19061), (3890, 14602), (4172, 13615), (5215, 10892), (5446, 10430), (7301, 7780)]