7280980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{397}}^1$

素因数の和:544

約数の個数: 48

約数和(自身を含む): 17652096

約数和(自身を除く): 10371116

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 262, 397, 524, 655, 794, 917, 1310, 1588, 1834, 1985, 2620, 2779, 3668, 3970, 4585, 5558, 7940, 9170, 11116, 13895, 18340, 27790, 52007, 55580, 104014, 208028, 260035, 364049, 520070, 728098, 1040140, 1456196, 1820245, 3640490, 7280980]

約数ペア:

[(1, 7280980), (2, 3640490), (4, 1820245), (5, 1456196), (7, 1040140), (10, 728098), (14, 520070), (20, 364049), (28, 260035), (35, 208028), (70, 104014), (131, 55580), (140, 52007), (262, 27790), (397, 18340), (524, 13895), (655, 11116), (794, 9170), (917, 7940), (1310, 5558), (1588, 4585), (1834, 3970), (1985, 3668), (2620, 2779)]