21235616

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{659}}^1$

素因数の和:741

約数の個数: 48

約数和(自身を含む): 44906400

約数和(自身を除く): 23670784

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 53, 76, 106, 152, 212, 304, 424, 608, 659, 848, 1007, 1318, 1696, 2014, 2636, 4028, 5272, 8056, 10544, 12521, 16112, 21088, 25042, 32224, 34927, 50084, 69854, 100168, 139708, 200336, 279416, 400672, 558832, 663613, 1117664, 1327226, 2654452, 5308904, 10617808, 21235616]

約数ペア:

[(1, 21235616), (2, 10617808), (4, 5308904), (8, 2654452), (16, 1327226), (19, 1117664), (32, 663613), (38, 558832), (53, 400672), (76, 279416), (106, 200336), (152, 139708), (212, 100168), (304, 69854), (424, 50084), (608, 34927), (659, 32224), (848, 25042), (1007, 21088), (1318, 16112), (1696, 12521), (2014, 10544), (2636, 8056), (4028, 5272)]