18193640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{647}}^1$

素因数の和:714

約数の個数: 64

約数和(自身を含む): 44323200

約数和(自身を除く): 26129560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 37, 38, 40, 74, 76, 95, 148, 152, 185, 190, 296, 370, 380, 647, 703, 740, 760, 1294, 1406, 1480, 2588, 2812, 3235, 3515, 5176, 5624, 6470, 7030, 12293, 12940, 14060, 23939, 24586, 25880, 28120, 47878, 49172, 61465, 95756, 98344, 119695, 122930, 191512, 239390, 245860, 454841, 478780, 491720, 909682, 957560, 1819364, 2274205, 3638728, 4548410, 9096820, 18193640]

約数ペア:

[(1, 18193640), (2, 9096820), (4, 4548410), (5, 3638728), (8, 2274205), (10, 1819364), (19, 957560), (20, 909682), (37, 491720), (38, 478780), (40, 454841), (74, 245860), (76, 239390), (95, 191512), (148, 122930), (152, 119695), (185, 98344), (190, 95756), (296, 61465), (370, 49172), (380, 47878), (647, 28120), (703, 25880), (740, 24586), (760, 23939), (1294, 14060), (1406, 12940), (1480, 12293), (2588, 7030), (2812, 6470), (3235, 5624), (3515, 5176)]