258156680

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^2\times {\mathrm{197}}^1$

素因数の和:570

約数の個数: 48

約数和(自身を含む): 587044260

約数和(自身を除く): 328887580

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 197, 362, 394, 724, 788, 905, 985, 1448, 1576, 1810, 1970, 3620, 3940, 7240, 7880, 32761, 35657, 65522, 71314, 131044, 142628, 163805, 178285, 262088, 285256, 327610, 356570, 655220, 713140, 1310440, 1426280, 6453917, 12907834, 25815668, 32269585, 51631336, 64539170, 129078340, 258156680]

約数ペア:

[(1, 258156680), (2, 129078340), (4, 64539170), (5, 51631336), (8, 32269585), (10, 25815668), (20, 12907834), (40, 6453917), (181, 1426280), (197, 1310440), (362, 713140), (394, 655220), (724, 356570), (788, 327610), (905, 285256), (985, 262088), (1448, 178285), (1576, 163805), (1810, 142628), (1970, 131044), (3620, 71314), (3940, 65522), (7240, 35657), (7880, 32761)]