217418812

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{431}}^1$

素因数の和:646

約数の個数: 48

約数和(自身を含む): 419126400

約数和(自身を除く): 201707588

約数列:

[1, 2, 4, 13, 26, 52, 89, 109, 178, 218, 356, 431, 436, 862, 1157, 1417, 1724, 2314, 2834, 4628, 5603, 5668, 9701, 11206, 19402, 22412, 38359, 38804, 46979, 76718, 93958, 126113, 153436, 187916, 252226, 498667, 504452, 610727, 997334, 1221454, 1994668, 2442908, 4181131, 8362262, 16724524, 54354703, 108709406, 217418812]

約数ペア:

[(1, 217418812), (2, 108709406), (4, 54354703), (13, 16724524), (26, 8362262), (52, 4181131), (89, 2442908), (109, 1994668), (178, 1221454), (218, 997334), (356, 610727), (431, 504452), (436, 498667), (862, 252226), (1157, 187916), (1417, 153436), (1724, 126113), (2314, 93958), (2834, 76718), (4628, 46979), (5603, 38804), (5668, 38359), (9701, 22412), (11206, 19402)]