21591190

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{241}}^1$

素因数の和:313

約数の個数: 48

約数和(自身を含む): 42793344

約数和(自身を除く): 21202154

約数列:

[1, 2, 5, 10, 17, 31, 34, 62, 85, 155, 170, 241, 289, 310, 482, 527, 578, 1054, 1205, 1445, 2410, 2635, 2890, 4097, 5270, 7471, 8194, 8959, 14942, 17918, 20485, 37355, 40970, 44795, 69649, 74710, 89590, 127007, 139298, 254014, 348245, 635035, 696490, 1270070, 2159119, 4318238, 10795595, 21591190]

約数ペア:

[(1, 21591190), (2, 10795595), (5, 4318238), (10, 2159119), (17, 1270070), (31, 696490), (34, 635035), (62, 348245), (85, 254014), (155, 139298), (170, 127007), (241, 89590), (289, 74710), (310, 69649), (482, 44795), (527, 40970), (578, 37355), (1054, 20485), (1205, 17918), (1445, 14942), (2410, 8959), (2635, 8194), (2890, 7471), (4097, 5270)]