40428990

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{21391}}^1$

素因数の和:21414

約数の個数: 64

約数和(自身を含む): 123217920

約数和(自身を除く): 82788930

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 105, 126, 135, 189, 210, 270, 315, 378, 630, 945, 1890, 21391, 42782, 64173, 106955, 128346, 149737, 192519, 213910, 299474, 320865, 385038, 449211, 577557, 641730, 748685, 898422, 962595, 1155114, 1347633, 1497370, 1925190, 2246055, 2695266, 2887785, 4042899, 4492110, 5775570, 6738165, 8085798, 13476330, 20214495, 40428990]

約数ペア:

[(1, 40428990), (2, 20214495), (3, 13476330), (5, 8085798), (6, 6738165), (7, 5775570), (9, 4492110), (10, 4042899), (14, 2887785), (15, 2695266), (18, 2246055), (21, 1925190), (27, 1497370), (30, 1347633), (35, 1155114), (42, 962595), (45, 898422), (54, 748685), (63, 641730), (70, 577557), (90, 449211), (105, 385038), (126, 320865), (135, 299474), (189, 213910), (210, 192519), (270, 149737), (315, 128346), (378, 106955), (630, 64173), (945, 42782), (1890, 21391)]