28903640

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{353}}^1$

素因数の和:476

約数の個数: 64

約数和(自身を含む): 68817600

約数和(自身を除く): 39913960

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 89, 92, 115, 178, 184, 230, 353, 356, 445, 460, 706, 712, 890, 920, 1412, 1765, 1780, 2047, 2824, 3530, 3560, 4094, 7060, 8119, 8188, 10235, 14120, 16238, 16376, 20470, 31417, 32476, 40595, 40940, 62834, 64952, 81190, 81880, 125668, 157085, 162380, 251336, 314170, 324760, 628340, 722591, 1256680, 1445182, 2890364, 3612955, 5780728, 7225910, 14451820, 28903640]

約数ペア:

[(1, 28903640), (2, 14451820), (4, 7225910), (5, 5780728), (8, 3612955), (10, 2890364), (20, 1445182), (23, 1256680), (40, 722591), (46, 628340), (89, 324760), (92, 314170), (115, 251336), (178, 162380), (184, 157085), (230, 125668), (353, 81880), (356, 81190), (445, 64952), (460, 62834), (706, 40940), (712, 40595), (890, 32476), (920, 31417), (1412, 20470), (1765, 16376), (1780, 16238), (2047, 14120), (2824, 10235), (3530, 8188), (3560, 8119), (4094, 7060)]